搜题
A large crowd assembled outside the American embassy.
A:watched
B:gathered
C:shouted
D:walked
A:watched
B:gathered
C:shouted
D:walked
共用题干
第二篇
Saving Money
Where you save your money often depends on what you are saving for. If you are
saving to buy a CD（光盘）or to go to a concert, then probably you would keep your
money somewhere in your room.
If you are saving for a big purchase like a mountain bike or a school trip,where would
you save your money?
One place to save money is the bank.Putting your money in a savings account will
help your money earn more money. If you put your money in a piggy bank（猪形储蓄罐）,
one year later you'll still have the same amount of money you put in.If you put your money
in a savings account,one year later,you'll have more money than you put in.Why?
When you keep your money in a bank,your money earns interest.Interest is an
amount of money a bank pays you to use your money.The bank uses your money(and
the money of other people,too)to loan money to people and businesses.
The bank will send you a statement several times a year. A bank statement tells you
how much money you have in your account.It also tells you how much interest you have
earned.If you leave your money in the bank,you can watch it grow!
Another way you can save money is to buy a certificate of deposit or CD.If you have
some money that you don't need to use for a long time,this is a good way to make your
money grow.
You can buy a CD at a bank.You agree not to use the money for a certain period of
time.That period might be from six months to five years.You can't touch your money
during that time.If you do,you must pay a penalty,or fee.
If you draw your money before it is due,you will have to
A:pay interest to the bank.
B:close your account.
C:open a new account.
D:pay a penalty or fee.
第二篇
Saving Money
Where you save your money often depends on what you are saving for. If you are
saving to buy a CD（光盘）or to go to a concert, then probably you would keep your
money somewhere in your room.
If you are saving for a big purchase like a mountain bike or a school trip,where would
you save your money?
One place to save money is the bank.Putting your money in a savings account will
help your money earn more money. If you put your money in a piggy bank（猪形储蓄罐）,
one year later you'll still have the same amount of money you put in.If you put your money
in a savings account,one year later,you'll have more money than you put in.Why?
When you keep your money in a bank,your money earns interest.Interest is an
amount of money a bank pays you to use your money.The bank uses your money(and
the money of other people,too)to loan money to people and businesses.
The bank will send you a statement several times a year. A bank statement tells you
how much money you have in your account.It also tells you how much interest you have
earned.If you leave your money in the bank,you can watch it grow!
Another way you can save money is to buy a certificate of deposit or CD.If you have
some money that you don't need to use for a long time,this is a good way to make your
money grow.
You can buy a CD at a bank.You agree not to use the money for a certain period of
time.That period might be from six months to five years.You can't touch your money
during that time.If you do,you must pay a penalty,or fee.
If you draw your money before it is due,you will have to
A:pay interest to the bank.
B:close your account.
C:open a new account.
D:pay a penalty or fee.
共用题干
The Impact of Antarctic Ozone Hole
The Antarctic ozone（臭氧）hole is changing weather patterns across the Southern Hemisphere （半球）,even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.
And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.
The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.
Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.
Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion（消耗）and late 20th Century warming.
Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060.
_________(56)
A: around
B:along
C:over
D:across
The Impact of Antarctic Ozone Hole
The Antarctic ozone（臭氧）hole is changing weather patterns across the Southern Hemisphere （半球）,even affecting the tropics,scientists have concluded. The scientists______(51)the new study added the ozone hole into standard climate models to_______(52)how it might have affected winds and rains. They say rainfall has moved further south towards the pole and the effect has been_______(53)strong over Australia.
And of_______(54)interest was the southward of the Southern Hemisphere jet stream. These high一altitude winds are_______(55)to determining weather patterns,in both hemispheres. Much of the cold weather felt in the UK_______(56)the last couple of winters,for example,was caused by blocking of the Northern Hemisphere stream.
The team found that overall,the ozone hole has_______(57)in rainfall moving south along with the winds._______(58)there are regional differences,particularly concerning Australia. In terms of the average for that zone,the ozone hole_______(59)about a 10% change一but for Australia,it's about 35%.
Their modeling indicated that global warming_______(60)greenhouse gas emissions is also a factor in changing rainfall patterns.
Natural climate cycles are also thought to be important here,as different rainfall patterns were _______(61)in the era before ozone depletion（消耗）and late 20th Century warming.
Although the_______(62)international organization has significantly checked emissions of harmful substances,they_______(63)for decades in the atmosphere,and so their effects are still being felt.Earlier,and international organization forecast that even the Antarctic ozone hole一which is more severe than its_______(64)in the Northern Hemisphere一should be_______(65)by 2045—2060.
_________(56)
A: around
B:along
C:over
D:across
共用题干
Renewable Energy Sources
Today petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug（填补）some of the gap from oil,but reserves of that will not last into the 22nd century either.Most experts predict we will exhaust easily accessible reserves within 50 years.We could fast reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Less-polluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.
The Chinese and Romans used watermills over 2,000 years ago.But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity.China's Three Gorges Dam,which has just been completed, is the largest ever.At five times the size of the US ' s Hoover Dam , its 26 turbines（涡轮机）will generate the equivalent energy of 18 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.
In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway. It is designed like windmill,but others take the form of turbines.
As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005.Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benign-they can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes.The UK's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020.But this may cause problems,because wind is unreliable.
Which of the following statements is true of wind power?
A:There is plenty of wind to provide the world's entire energy needs.
B:It is the most rapidly growing type of electricity production.
C:It may not be reliable.
D:All of the above.
Renewable Energy Sources
Today petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles.Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug（填补）some of the gap from oil,but reserves of that will not last into the 22nd century either.Most experts predict we will exhaust easily accessible reserves within 50 years.We could fast reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Less-polluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.
The Chinese and Romans used watermills over 2,000 years ago.But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity.China's Three Gorges Dam,which has just been completed, is the largest ever.At five times the size of the US ' s Hoover Dam , its 26 turbines（涡轮机）will generate the equivalent energy of 18 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.
In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway. It is designed like windmill,but others take the form of turbines.
As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005.Modern wind farms consist of turbines that generate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs.Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benign-they can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is building Europe's largest wind farm,which will power 200 ,000 homes.The UK's goal is to generate one-fifth of power from renewable sources,mainly wind,by 2020.But this may cause problems,because wind is unreliable.
Which of the following statements is true of wind power?
A:There is plenty of wind to provide the world's entire energy needs.
B:It is the most rapidly growing type of electricity production.
C:It may not be reliable.
D:All of the above.
共用题干
One useful anti-cancer drug can effectively erase the whorls（箩状指纹）and other characteristic marks that give people their distinctive fingerprints.Losing_________(51)could become troublesome. A case released online in a letter by Annals of Oncology（《肿瘤学年报》）indicates how big a_________(52)of losing fingerprints is.
Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine（卡培他滨，一种化疗药物）to _________( 53 ) his nasopharyngeal（鼻炎的）cancer.
After three years on the_________(54),the patient decided to visit U.S.relatives last December. But he was stopped by U.S. customs officials__________(55)4 hours after entering the country when those officials couldn't get fingerprints from the man. There were no distinctive swirly（旋涡状的）_________(56)appearing from his index finger.
U.S.customs has been fingerprinting incoming foreign visitors for years,Tan says.Their index fingers are _________(57)and screened against digital files of the fingerprints of bad guys一terrorists and potential criminals that our federal guardians have been tasked with keeping out of the coun-try. Unfortunately,for the Singaporean traveler,one potential_________(58)effect of his drug treatment is a smoothing of the tissue on the finger pads.__________(59),no fingerprints.
"It is uncertain when fingerprint loss will__________(60)to take place in patients who are taking capecitabine,"Tan points out. So he cautions any physicians who________(61)the drug to provide their patients with a doctor's note pointing out that their medicine may cause fingerprints to disappear.
Eventually,the Singapore traveler made it into the United States.I guess the name on his passport didn't raise any red flags.But he is also now got the explanatory doctor's note一and won't leave home _________(62)it.
By the way,maybe the Food and Drug Administration,__________(63)approved use of the drug 11 years ago,should consider_________(64)its list of side effects associated with this medicine.The current list does note that patients may experience vomiting,stomach pain and some other side effects.But no where________(65)it mention the potential for loss of fingerprints.
_________(63)
A:who
B:where
C:when
D:which
One useful anti-cancer drug can effectively erase the whorls（箩状指纹）and other characteristic marks that give people their distinctive fingerprints.Losing_________(51)could become troublesome. A case released online in a letter by Annals of Oncology（《肿瘤学年报》）indicates how big a_________(52)of losing fingerprints is.
Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine（卡培他滨，一种化疗药物）to _________( 53 ) his nasopharyngeal（鼻炎的）cancer.
After three years on the_________(54),the patient decided to visit U.S.relatives last December. But he was stopped by U.S. customs officials__________(55)4 hours after entering the country when those officials couldn't get fingerprints from the man. There were no distinctive swirly（旋涡状的）_________(56)appearing from his index finger.
U.S.customs has been fingerprinting incoming foreign visitors for years,Tan says.Their index fingers are _________(57)and screened against digital files of the fingerprints of bad guys一terrorists and potential criminals that our federal guardians have been tasked with keeping out of the coun-try. Unfortunately,for the Singaporean traveler,one potential_________(58)effect of his drug treatment is a smoothing of the tissue on the finger pads.__________(59),no fingerprints.
"It is uncertain when fingerprint loss will__________(60)to take place in patients who are taking capecitabine,"Tan points out. So he cautions any physicians who________(61)the drug to provide their patients with a doctor's note pointing out that their medicine may cause fingerprints to disappear.
Eventually,the Singapore traveler made it into the United States.I guess the name on his passport didn't raise any red flags.But he is also now got the explanatory doctor's note一and won't leave home _________(62)it.
By the way,maybe the Food and Drug Administration,__________(63)approved use of the drug 11 years ago,should consider_________(64)its list of side effects associated with this medicine.The current list does note that patients may experience vomiting,stomach pain and some other side effects.But no where________(65)it mention the potential for loss of fingerprints.
_________(63)
A:who
B:where
C:when
D:which
共用题干
Better Solar Energy Systems:More Heat,More Light
Solar photovoltaic（光电的）thermal energy systems , or PVTs , generate both heat and electricity , but
_________ (51)now they haven't been very good at the heat-generating part compared to a stand-alone
solar thermal collector. That ' s because they operate at low temperatures to cool crystalline silicon（晶体硅）
solar cells, _______(52)lets the silicon generate more electricity but isn't a very efficient way to gather
heat.
That's a problem of economics.Good solar hot-water systems can harvest much more energy than a
solar一electric system at a substantially lower _________(53).And it's also a space problem:photovoltaic
cells can
_________(54)up all the space on the roof,leaving little room for thermal applications.
In a pair of studies,Joshua Pearce,an associate professor of materials science and engineering,has de-
vised a_________(55)in the form of a better PVT made with a different kind of silicon.
Most solar panels are made with crystalline silicon,but you can also make solar cells out of amorphous
（非晶形的）silicon , commonly known
________( 56 ) thin-film silicon. They don ' t create as much elec-
tricity,but they are lighter,flexible,and cheaper. And,because they________(57)much less silicon,they
have a greener footprint._________(58),thin-film silicon solar cells are vulnerable to some bad一news
physics in the form of the Staebler-Wronski effect.
"That means that their efficiency drops when you_________(59)them to light一pretty much the worst
possible effect for a solar cell,"Pearce explains,which is one of the__________(60)thin-film solar panels
make up only a small fraction of the market.
However,Pearce and his team found a_______(61)to engineer around the Staebler-Wronski effect by
incorporating thin-film silicon in a new________(62)of PVT. You don't have to cool down thin-film sili-
con to make it work.In fact,Pearce's group discovered that by heating it to solar-thermal operating tempera-
tures,near the boiling_________(63)of water,they could make thicker cells that largely_________(64)
the Staebler-Wronski effect.When they applied the thin-film silicon directly to a solar thermal energy collector,
they also found that by baking the cell once a day,they_________(65)the solar cell's electrical efficiency
by over 10 percent.
_________(51)
A:unless
B:until
C:when
D:if
Better Solar Energy Systems:More Heat,More Light
Solar photovoltaic（光电的）thermal energy systems , or PVTs , generate both heat and electricity , but
_________ (51)now they haven't been very good at the heat-generating part compared to a stand-alone
solar thermal collector. That ' s because they operate at low temperatures to cool crystalline silicon（晶体硅）
solar cells, _______(52)lets the silicon generate more electricity but isn't a very efficient way to gather
heat.
That's a problem of economics.Good solar hot-water systems can harvest much more energy than a
solar一electric system at a substantially lower _________(53).And it's also a space problem:photovoltaic
cells can
_________(54)up all the space on the roof,leaving little room for thermal applications.
In a pair of studies,Joshua Pearce,an associate professor of materials science and engineering,has de-
vised a_________(55)in the form of a better PVT made with a different kind of silicon.
Most solar panels are made with crystalline silicon,but you can also make solar cells out of amorphous
（非晶形的）silicon , commonly known
________( 56 ) thin-film silicon. They don ' t create as much elec-
tricity,but they are lighter,flexible,and cheaper. And,because they________(57)much less silicon,they
have a greener footprint._________(58),thin-film silicon solar cells are vulnerable to some bad一news
physics in the form of the Staebler-Wronski effect.
"That means that their efficiency drops when you_________(59)them to light一pretty much the worst
possible effect for a solar cell,"Pearce explains,which is one of the__________(60)thin-film solar panels
make up only a small fraction of the market.
However,Pearce and his team found a_______(61)to engineer around the Staebler-Wronski effect by
incorporating thin-film silicon in a new________(62)of PVT. You don't have to cool down thin-film sili-
con to make it work.In fact,Pearce's group discovered that by heating it to solar-thermal operating tempera-
tures,near the boiling_________(63)of water,they could make thicker cells that largely_________(64)
the Staebler-Wronski effect.When they applied the thin-film silicon directly to a solar thermal energy collector,
they also found that by baking the cell once a day,they_________(65)the solar cell's electrical efficiency
by over 10 percent.
_________(51)
A:unless
B:until
C:when
D:if
共用题干
Mother Nature Shows Her Strength
Tornadoes（龙卷风）and heavy thunderstorms moved across the Great Lakes and into Trumbull County
on Saturday evening.The storms were dramatic and dangerous.
George Snyder was driving the fire truck down Route 88 when he first noticed that a funnel（漏斗状的）
cloud was behind him."I stopped the truck and watched the funnel cloud.It was about 100 feet off the
ground and I saw it go up and down for a while.It was moving toward Bradley Road and then suddenly it
disappeared,"Snyder said.
Snyder only saw one of the funnel clouds that passed through northeastern Ohio on Saturday.In
Trumbull County,a tornado turned trees onto their sides.Some trees fell onto houses and cars.Other trees fell
onto telephone and electrical wires as thev went down.
Amanda Symcheck was having a party when the storm began."I knew something was wrong,"she said.
"I saw the sky go green and pink.Then it sounded like a train rushing toward the house.I started crying and
told everyone to go to the basement for protection."
The tornado caused a lot of damage to cars and houses in the area. It will take a long time and much
money to repair everything.There was also serious water damage from the thunderstorms.The heavy rains and
high wind caused the power to go out in many homes.
The storms caused serious flooding in areas near the river. More than four inches of rain fell in parts of
Trumbull County.The river was so high that the water ran into streets and houses.Many streets had to be
closed to cars and trucks because of the high water. This made it difficult for fire trucks,police cars,and
other rescue vehicles to help people who were in trouble.
Many people who live near the river had to leave their homes for their own safety.Some people reported
five feet of water in their homes.Local and state officials opened emergency shelters for the people who were
evacuated（撤走）.The Red Cross served meals to them.
"This was a really intense storm,"said Snyder,"People were afraid.Mother Nature can be fierce.We
were lucky this time.No one was killed."
Several people were missing during the storm.
A:Right
B:Wrong
C:Not mentioned
Mother Nature Shows Her Strength
Tornadoes（龙卷风）and heavy thunderstorms moved across the Great Lakes and into Trumbull County
on Saturday evening.The storms were dramatic and dangerous.
George Snyder was driving the fire truck down Route 88 when he first noticed that a funnel（漏斗状的）
cloud was behind him."I stopped the truck and watched the funnel cloud.It was about 100 feet off the
ground and I saw it go up and down for a while.It was moving toward Bradley Road and then suddenly it
disappeared,"Snyder said.
Snyder only saw one of the funnel clouds that passed through northeastern Ohio on Saturday.In
Trumbull County,a tornado turned trees onto their sides.Some trees fell onto houses and cars.Other trees fell
onto telephone and electrical wires as thev went down.
Amanda Symcheck was having a party when the storm began."I knew something was wrong,"she said.
"I saw the sky go green and pink.Then it sounded like a train rushing toward the house.I started crying and
told everyone to go to the basement for protection."
The tornado caused a lot of damage to cars and houses in the area. It will take a long time and much
money to repair everything.There was also serious water damage from the thunderstorms.The heavy rains and
high wind caused the power to go out in many homes.
The storms caused serious flooding in areas near the river. More than four inches of rain fell in parts of
Trumbull County.The river was so high that the water ran into streets and houses.Many streets had to be
closed to cars and trucks because of the high water. This made it difficult for fire trucks,police cars,and
other rescue vehicles to help people who were in trouble.
Many people who live near the river had to leave their homes for their own safety.Some people reported
five feet of water in their homes.Local and state officials opened emergency shelters for the people who were
evacuated（撤走）.The Red Cross served meals to them.
"This was a really intense storm,"said Snyder,"People were afraid.Mother Nature can be fierce.We
were lucky this time.No one was killed."
Several people were missing during the storm.
A:Right
B:Wrong
C:Not mentioned
共用题干
American Families
1 Despite social and economic differences among Americans,many American families have certain characteristics in common.Both the husband and wife were born in the United States,and their forefathers came from Europe.They have completed high school,and they belong to the middle class.They have a car, a television set,a washing machine,a refrigerator,a telephone,etc.They own their own home and spend about 55%of their income for housing and food.Clothing accounts for almost 10%of their income,medical care 6%,transportation 8%and taxes 15%.The rest of their income is used for such items as insurance, savings,gifts,and recreation.
2 Most families consist of a mother,a father,and,at most,two children living at home.There may be relatives-grandparents,aunts,uncles,cousins living in the same community,but American families usually maintain separate households.This family structure is known as the"nuclear family".It is unusual. for members of the family other than the husband,wife,and children to live together.
3 Marriage in the United States is considered a matte,r of individual responsibility and decision.Young people frequently fall in love and many even if their parents disagree.American marriages are usually based on romantic love,rather than on social class,education,or religion.
4 After their marriage the young couple is free to decide where to live and when to start a family.Most young couples set up their own household immediately.In the early 1970s only 15%of all married couples were not living on their own-independently and by themselves.Most married people practise some kind of birth control.They plan the number of children they are going to have and when their children will be born. The practice of limiting the size of families has general approval.The birth rate has been declining steadily in recent years.
Most married couple don't______.
A:live with their parents
B:their own decisions
C:most American families are usually small
D:the family structure
E:some similar features
F:has been dropping
American Families
1 Despite social and economic differences among Americans,many American families have certain characteristics in common.Both the husband and wife were born in the United States,and their forefathers came from Europe.They have completed high school,and they belong to the middle class.They have a car, a television set,a washing machine,a refrigerator,a telephone,etc.They own their own home and spend about 55%of their income for housing and food.Clothing accounts for almost 10%of their income,medical care 6%,transportation 8%and taxes 15%.The rest of their income is used for such items as insurance, savings,gifts,and recreation.
2 Most families consist of a mother,a father,and,at most,two children living at home.There may be relatives-grandparents,aunts,uncles,cousins living in the same community,but American families usually maintain separate households.This family structure is known as the"nuclear family".It is unusual. for members of the family other than the husband,wife,and children to live together.
3 Marriage in the United States is considered a matte,r of individual responsibility and decision.Young people frequently fall in love and many even if their parents disagree.American marriages are usually based on romantic love,rather than on social class,education,or religion.
4 After their marriage the young couple is free to decide where to live and when to start a family.Most young couples set up their own household immediately.In the early 1970s only 15%of all married couples were not living on their own-independently and by themselves.Most married people practise some kind of birth control.They plan the number of children they are going to have and when their children will be born. The practice of limiting the size of families has general approval.The birth rate has been declining steadily in recent years.
Most married couple don't______.
A:live with their parents
B:their own decisions
C:most American families are usually small
D:the family structure
E:some similar features
F:has been dropping
Jess likes playing basketball，butI like swimming.
A:how
B:what
C:while
D:why
A:how
B:what
C:while
D:why
共用题干
Water一the Issue of This Century
The world is running short of freshwater. Populations are growing bigger and thirstier （渴的）,with the result that freshwater is becoming increasingly scarce（缺乏）.Half the world's wetlands have disappeared during the last century,while estimates suggest that wa- ter use will rise by 50% in the next 30 years.
The World Bank report estimates that as much as half of the world's population,concentrated in Africa,the Middle East and south Asia,will face“severe water shortages”by 2025.Local water conflicts and the loss of freshwater ecosystems appear large in some re- gions.
A similar picture emerges from the globe's salt water regions. Three-quarters of the world's people may live within 100km of the sea in 2025,putting even more pressure on stretched coastal ecosystems. Two thirds of fisheries（渔业）are exploited at or beyond their sustainable limits, and half the world's coral reefs（珊瑚礁）may perish in 100 years. Almost 60% of coral reefs and 34% of fish species are at risk from human activities,the Bank says.
The report concludes that there is ample evidence to justify immediate and coordinated action to safeguard supplies and use water more efficiently.
Fresh water consumption is rising quickly,and the availability of water in some regions is likely to become one of the most pressing issues of the 21st century.
A third of the world's popu1ation一around two billion people一live in countries that are experiencing moderate to high water shortages.That proportion could rise to half or more in the next 30 years unless institutions（制度）change to ensure better conservation and alloca- tion of water.
China is one country where the portents（征兆）are gloomy. The most waterstressed country in East Asia,China is exploiting 44%of its usable water,a figure projected to rise to6O%by 2020.Primary withdrawal of water of more than 60%is widely considered by water experts to exceed the environmental carrying capacity of a river basin system. Although
China's total use appears still to be reasonable,it has several basins that are severely stressed environmentally.
Withdrawals exceed environmental limits in Afghanistan and Pakistan,and will exceed them in India by 2020.In the Middle East and North Africa,only Morocco has unexploited water resources.The rest have exceeded environmental limits and many are mining aquifers （蓄水层）一bodies of water-bearing rock一the report says.
It is estimated that water use will rise by 50% in the next 30 years.
A: Right
B: Wrong
C: Not mentioned
Water一the Issue of This Century
The world is running short of freshwater. Populations are growing bigger and thirstier （渴的）,with the result that freshwater is becoming increasingly scarce（缺乏）.Half the world's wetlands have disappeared during the last century,while estimates suggest that wa- ter use will rise by 50% in the next 30 years.
The World Bank report estimates that as much as half of the world's population,concentrated in Africa,the Middle East and south Asia,will face“severe water shortages”by 2025.Local water conflicts and the loss of freshwater ecosystems appear large in some re- gions.
A similar picture emerges from the globe's salt water regions. Three-quarters of the world's people may live within 100km of the sea in 2025,putting even more pressure on stretched coastal ecosystems. Two thirds of fisheries（渔业）are exploited at or beyond their sustainable limits, and half the world's coral reefs（珊瑚礁）may perish in 100 years. Almost 60% of coral reefs and 34% of fish species are at risk from human activities,the Bank says.
The report concludes that there is ample evidence to justify immediate and coordinated action to safeguard supplies and use water more efficiently.
Fresh water consumption is rising quickly,and the availability of water in some regions is likely to become one of the most pressing issues of the 21st century.
A third of the world's popu1ation一around two billion people一live in countries that are experiencing moderate to high water shortages.That proportion could rise to half or more in the next 30 years unless institutions（制度）change to ensure better conservation and alloca- tion of water.
China is one country where the portents（征兆）are gloomy. The most waterstressed country in East Asia,China is exploiting 44%of its usable water,a figure projected to rise to6O%by 2020.Primary withdrawal of water of more than 60%is widely considered by water experts to exceed the environmental carrying capacity of a river basin system. Although
China's total use appears still to be reasonable,it has several basins that are severely stressed environmentally.
Withdrawals exceed environmental limits in Afghanistan and Pakistan,and will exceed them in India by 2020.In the Middle East and North Africa,only Morocco has unexploited water resources.The rest have exceeded environmental limits and many are mining aquifers （蓄水层）一bodies of water-bearing rock一the report says.
It is estimated that water use will rise by 50% in the next 30 years.
A: Right
B: Wrong
C: Not mentioned
He made a number of rude remarks about the food.
A:comments
B:signs
C:manners
D:noises
A:comments
B:signs
C:manners
D:noises
共用题干
Robotic Highway Cones
A University of Nebraska professor has developed robotic cones and barrels.These robotic cones and barrels can move out of the way,or into______(51),from computer commands made miles away. They can even be programmed to move on their own at any particular part of the day,said Shane Farritor,an assistant professor of mechanical engineering at Nebraska.
For example,if workers arrived at 6 am,the cones could move from the side of the highway to______(52)off the lane at that time.And they can return to the______(53)place at the end of the day."It just seems like a very good application for robots."Farritor said."The robot-ic cones would also help______(54)people from hazardous jobs on the highway putting barrels and cones into place,"Farritor said in a report on his creation.
Work on the idea began in 2002 using a National Academy of Sciences grant. The______ (55)allowed Farritor to work on the project with graduate students at Nebraska and his assistant Steve Goddard.
The robots are placed at the bottom of the cones and barrels and are______(56)enough not to greatly change the appearance of the construction aides."It would look exactly the same,"Farritor said."______(57)there's a kind of rubbery,black base to them. We replace that ______(58)a robot."
Farritor has talked with officials from the Nebraska Department of Roads about how the robots would be most______(59)to what they might need.
The robots could come in handy following a slow-moving maintenance operation,like paint-ing a stripe on a road or moving asphalt,______(60)now the barrels have to be picked up and moved as the operation______(61)."That way you don't have to block off a 10-mile strip for the operation,"Farritor said.
______(62)prototypes have been made,they are not in use anywhere. Farritor said he has______(63)for a patent and is considering what to do next. He is thinking about starting a small business. He is also thinking about______(64)the robots to roads departments and others across the country who may______(65)from them.
63._________
A: applied
B: asked
C: called
D: argued
Robotic Highway Cones
A University of Nebraska professor has developed robotic cones and barrels.These robotic cones and barrels can move out of the way,or into______(51),from computer commands made miles away. They can even be programmed to move on their own at any particular part of the day,said Shane Farritor,an assistant professor of mechanical engineering at Nebraska.
For example,if workers arrived at 6 am,the cones could move from the side of the highway to______(52)off the lane at that time.And they can return to the______(53)place at the end of the day."It just seems like a very good application for robots."Farritor said."The robot-ic cones would also help______(54)people from hazardous jobs on the highway putting barrels and cones into place,"Farritor said in a report on his creation.
Work on the idea began in 2002 using a National Academy of Sciences grant. The______ (55)allowed Farritor to work on the project with graduate students at Nebraska and his assistant Steve Goddard.
The robots are placed at the bottom of the cones and barrels and are______(56)enough not to greatly change the appearance of the construction aides."It would look exactly the same,"Farritor said."______(57)there's a kind of rubbery,black base to them. We replace that ______(58)a robot."
Farritor has talked with officials from the Nebraska Department of Roads about how the robots would be most______(59)to what they might need.
The robots could come in handy following a slow-moving maintenance operation,like paint-ing a stripe on a road or moving asphalt,______(60)now the barrels have to be picked up and moved as the operation______(61)."That way you don't have to block off a 10-mile strip for the operation,"Farritor said.
______(62)prototypes have been made,they are not in use anywhere. Farritor said he has______(63)for a patent and is considering what to do next. He is thinking about starting a small business. He is also thinking about______(64)the robots to roads departments and others across the country who may______(65)from them.
63._________
A: applied
B: asked
C: called
D: argued
共用题干
第三篇
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are
in trouble.A report says that on average 15 people drown in British pools each year,but
many more suffer major injury after getting into difficulties.Now a French company has
developed an artificial intelligence system called Poseidon that sounds the alarm when it
sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool,the new system sends an alarm
signal to a poolside monitoring station and a lifeguard's pager（呼机）.In trials at a pool in
Ancenis,near Nantes,it saved a life within just a few months,says Alistair McQuade,a
spokesman for its maker,Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras.
Al software analyses the images to work out swimmers' trajectories（轨迹）.To do this
reliably,it has to tell the difference between a swimmer and the shadow of someone being
cast onto the bottom or side of the pool.
It does the same with an image from another camera viewing the shape from a different
angle.If the two projections are in the same position,the shape is identified as a shadow
and is ignored.But if they are different,the shape is a swimmer and so the system follows
its trajectory.
To pick out potential drowning victims,anyone in the water who starts to descend
slowly is added to the software's"pre-alert"（预先警戒）list,says McQuade. Swimmers
who then stay immobile on the pool bottom for 5 seconds or more are considered in danger
of drowning.Poseidon double-checks that the image really is of a swimmer,not a shadow,
by seeing whether it obscures（使模糊）the pool's floor texture when viewed from overhead.
If so,it alerts the lifeguard,showing the swimmer's location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High
Wycombe,Buckinghamshire.One man who is impressed with the idea is Travor Baylis,
inventor of the clockwork（时钟装置）radio. Baylis runs a company that installs swimming
pools-and he was once an underwater escapologist（脱身杂技演员）with a circus（马
戏团）."I say full marks to them if this works and can save lives,"he says.
To save a life,Al software must be able to
A:descend in the water.
B:videotape every movement.
C:distinguish between a swimmer and a shadow.
D:save a life within a few months.
第三篇
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are
in trouble.A report says that on average 15 people drown in British pools each year,but
many more suffer major injury after getting into difficulties.Now a French company has
developed an artificial intelligence system called Poseidon that sounds the alarm when it
sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool,the new system sends an alarm
signal to a poolside monitoring station and a lifeguard's pager（呼机）.In trials at a pool in
Ancenis,near Nantes,it saved a life within just a few months,says Alistair McQuade,a
spokesman for its maker,Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras.
Al software analyses the images to work out swimmers' trajectories（轨迹）.To do this
reliably,it has to tell the difference between a swimmer and the shadow of someone being
cast onto the bottom or side of the pool.
It does the same with an image from another camera viewing the shape from a different
angle.If the two projections are in the same position,the shape is identified as a shadow
and is ignored.But if they are different,the shape is a swimmer and so the system follows
its trajectory.
To pick out potential drowning victims,anyone in the water who starts to descend
slowly is added to the software's"pre-alert"（预先警戒）list,says McQuade. Swimmers
who then stay immobile on the pool bottom for 5 seconds or more are considered in danger
of drowning.Poseidon double-checks that the image really is of a swimmer,not a shadow,
by seeing whether it obscures（使模糊）the pool's floor texture when viewed from overhead.
If so,it alerts the lifeguard,showing the swimmer's location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High
Wycombe,Buckinghamshire.One man who is impressed with the idea is Travor Baylis,
inventor of the clockwork（时钟装置）radio. Baylis runs a company that installs swimming
pools-and he was once an underwater escapologist（脱身杂技演员）with a circus（马
戏团）."I say full marks to them if this works and can save lives,"he says.
To save a life,Al software must be able to
A:descend in the water.
B:videotape every movement.
C:distinguish between a swimmer and a shadow.
D:save a life within a few months.
共用题干
Interior Design
Although interior design has existed since the beginning of architecture,its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be______(51)in a single large building.
The importance of interior design becomes______(52)when we realize how much time we ______(53)surrounded by four walls.Whenever we need to be indoors,we want our surroundings to be______(54)attractive and comfortable as possible.We also expect______(55) place to be appropriate to its use.
You would be______(56)if the inside of your bedroom were suddenly changed to look ______(57)the inside of a restaurant. And you wouldn't feel______(58)in a business office that has the appearance of a school.
It soon becomes clear that the interior designer's most important basic______(59)is the function of the particular______(60),for example,a theatre with poor sight lines,poor sound shaping qualities,and______(61)few entries and exists will not work for______(62)purposes,no matter how beautifully it might be______(63).Nevertheless,for any kind of space,the designer has to make many of the same kind of______(64).He or she must coordinate the shapes,lighting and decoration of everything from ceilling to floor,______(65)addition,the designer must usually select furniture or design built-in furniture,according to the functions that need to be served.
_________(51)
A:consisted
B:contained
C:composed
D:comprised
Interior Design
Although interior design has existed since the beginning of architecture,its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be______(51)in a single large building.
The importance of interior design becomes______(52)when we realize how much time we ______(53)surrounded by four walls.Whenever we need to be indoors,we want our surroundings to be______(54)attractive and comfortable as possible.We also expect______(55) place to be appropriate to its use.
You would be______(56)if the inside of your bedroom were suddenly changed to look ______(57)the inside of a restaurant. And you wouldn't feel______(58)in a business office that has the appearance of a school.
It soon becomes clear that the interior designer's most important basic______(59)is the function of the particular______(60),for example,a theatre with poor sight lines,poor sound shaping qualities,and______(61)few entries and exists will not work for______(62)purposes,no matter how beautifully it might be______(63).Nevertheless,for any kind of space,the designer has to make many of the same kind of______(64).He or she must coordinate the shapes,lighting and decoration of everything from ceilling to floor,______(65)addition,the designer must usually select furniture or design built-in furniture,according to the functions that need to be served.
_________(51)
A:consisted
B:contained
C:composed
D:comprised
共用题干
The Difference between Man and Computer
What makes people different from computer programs?What is the missing element that our theories don't yet1for?The answer is simple:People read newspaper stories for a reason:to learn more about2they are interested in. Computers,on the other hand, don't. In fact,computers don,t3have interests；there is nothing in particular that they are trying to find out when they read. If a computer4is to be a model of story understanding,it should also read for a“purpose”.
of course,people have several goals that do not make5to attribute to computers. One might read a restaurant guide6order to satisfy hunger or entertainment goals,or to 7a good place to go for a business lunch. Computers do not get hungry,and computers do not have business lunches.
However,these physiological and social goals give8to several intellectual or cognitive goals. A goal to satisfy hunger gives rise to goals to find9about the name of a restaurant which10the desired type of food,how expensive the restaurant is,the location of the restaurant,etc. These are goals to11information or knowledge,what we are call-ing12goals. These goals can be held by computers too；a computer13“want”to find out the location of a restaurant,and read a guide in order to do so14the same way as a person might. While such a goal would not15out of hunger in the case of the com-puter,it might well arise out of the“goal” to learn more about restaurants.
14._________
A: as
B: on
C: by
D: in
The Difference between Man and Computer
What makes people different from computer programs?What is the missing element that our theories don't yet1for?The answer is simple:People read newspaper stories for a reason:to learn more about2they are interested in. Computers,on the other hand, don't. In fact,computers don,t3have interests；there is nothing in particular that they are trying to find out when they read. If a computer4is to be a model of story understanding,it should also read for a“purpose”.
of course,people have several goals that do not make5to attribute to computers. One might read a restaurant guide6order to satisfy hunger or entertainment goals,or to 7a good place to go for a business lunch. Computers do not get hungry,and computers do not have business lunches.
However,these physiological and social goals give8to several intellectual or cognitive goals. A goal to satisfy hunger gives rise to goals to find9about the name of a restaurant which10the desired type of food,how expensive the restaurant is,the location of the restaurant,etc. These are goals to11information or knowledge,what we are call-ing12goals. These goals can be held by computers too；a computer13“want”to find out the location of a restaurant,and read a guide in order to do so14the same way as a person might. While such a goal would not15out of hunger in the case of the com-puter,it might well arise out of the“goal” to learn more about restaurants.
14._________
A: as
B: on
C: by
D: in