She was sent a box of chocolates along with a letter saying she was fired.
A:killed
B:shot
C:dismissed
D:murdered

共用题干
Giant Structures
It is an impossible task to select the most amazing wonders of the modern world since every year more______(1)constructions appear. Here are three giant structures which are worthy of our admiration______(2)they may have been surpassed by some more recent wonders.
The Petronas Twin Towers
The Petronas Towers were the tallest buildings in the world when they were completed in 1999.______(3)a height of 452 metres,the tall twin towers,like two thin pencils,dominate the city of Kuala Lumpur. At the 41st floor,the towers are______(4)by a bridge,symbolizing a gateway to the city. The American architect Cesar Pelli designed the skyscrapers.
Constructed of high-strength concrete,the building______(5)around 1,800 square metres of office space on every floor. And it has a shopping centre and a concert hall at the base.Other______(6)of this impressive building include double-decker lifts,and glass and steel sunshades.
The Millau Bridge
The Millau Bridge was opened in 2004 in the Tarn Valley,in southern France. At the ______(7)it was built,it was the world,5 highest bridge,______(8)over 340m at the highest point. The bridge is described as one of the most amazingly beautiful bridges in the world. It was built to ________ (9) Millau's congestion（拥堵）problems. The congestion was then caused by traffic passing from Paris to Barcelona in Spain. The bridge was built to with-stand the______(10) extreme seismic（地震的）and climatic conditions. Besides , it is guar- anteed for 120 years!
The Itaipu Dam
The Itaipu hydroelectric power plant is one of the largest constructions of its kind in the world.
It______(11)of a series of dams across the River Parana,______(12)forms a natural border between Brazil and Paraguay. Started in 1975 and taking 16 years to complete, the construction was carried out as a joint project between the two______(13).The dam is well-known for both its electricity output and its size. In 1995 it produced 78% of Paraguay's and 25% Of Brazil's______(14)needs. In its construction,the amount of iron and steel used was equivalent to over 300 Eiffel Towers.It is a______(15)amazing wonder of engineering.
10._________
A: much
B: more
C: less
D: most

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An Intelligent Car
Driving needs sharp eyes, keen ears, quick brain, and coordination（协调）between
hands and the brain.Many human drivers have all_________(1)and can control a fast
-moving car. But how does an intelligent car control itself?
There is a virtual（虚拟的）driver in the smart car. This virtual driver has "eyes",
"brains","hands"and"feet",too.The minicameras_________(2)each side of the
car are his"eyes",which_________(3)the road conditions ahead of it.They watch
the_________(4)to the car's left and right.There is also a highly automatic driving
_________(5)in the car. It is the built-in computer,which is the virtual driver's
"brain".His"brain"_________(6)the speeds of other moving cars near it and
analyzes their positions.Basing on this information,it chooses the_________(7)path
for the intelligent car,and gives instructions to the"hands"and"feet"to act accordingly.
In this way,the virtual driver_________(8)his car.
What is the virtual driver's best advantage?He reacts_________(9).The
minicameras are bringing_________(10)continuously to the"brain".It completes the
processing of the images within 100 milliseconds._________(11),the world's best
driver needs at least one second to react.Besides,when he takes_________(12),he
needs one more second.
The virtual driver is really wonderful.He can reduce the accident_________(13)
considerably on expressways（高速公路）.In this_________(14),can we let him have
the wheel at any time and in any place?Experts_________(15)that we cannot do that
just yet.His ability to recognize things is still limited.He can now only drive an intelligent
car on expressways.
_________(6)
A:calculates
B:reaches
C:gathers
D:reduces

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Ecosystem
1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where living creatures expand within a given area. You can say that an ecosystem is the natural environment where biological organisms（生物）such as plants,animals and humans co-exist in this world. So naturally that includes you and me. Yes,we are all members of an ecosystem!
2 .There are different kinds of ecosystems depending on the type of surface or environ-ment. Most are naturally made such as the ocean or lake and the desert or rainforest.Some are man-made or artificial to encourage co-habitation（同居）between living and non-living things in a monitored environment,such as a zoo or garden.
3 .Plants make up the biggest group of biological creatures within an ecosystem,and that's because they are the natural food producers for everyone. Plants raised in the earth need air and collect sunlight to help them grow. When they grow,the plants and its fruits or flowers eventually become a source of food to animals,microorganisms（微生物）and even hu- mans,of course. Food is then converted to energy for the rest of us to function,and this hap-pens in a never-ending cycle until the living creatures die and break up back in the earth.
4 .Ecosystems are the basis of survival for all living things.We depend on plants and ani-mals for food. In order for us to exist,we need to grow and care about other organisms. We also need to care for the non-living things within our environment like our air and water so we can continue living as a population. Since plants,animals and humans are all of various species（物种）,we all play a role in maintaining the ecosystem.
5 .To preserve our ecosystems,we should stop using too much energy,which happens when we consume more than our share of resources. Humans should not disturb the natural habitat（栖息地）of plants and animals,and allow them to grow healthily for the cycle to con-tinue. Too many people in a habitat can mean displacement（搬迁）: imagine being thrown out of your home because there is no more space for everyone. Worse,overpopulation can also ru- in the environment and cause destruction of existing plants and animals.
Paragraph 3_________
A: What Can We Do to Help Protect Ecosystems?
B: What Are Different types of Ecosystems?
C: What Is an Ecosystem?
D: What Destroys Ecosystems?
E: How Does an Ecosystem Work?
F: Why Are Ecosystems Emportant?

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第三篇
Renewable Energy Sources
Today petroleum（石油）provides around 40% of the world's energy needs , mostly
fuelling automobiles.Coal is still used,mostly in power stations,to cover one一quarter of
our energy needs,but it is the least efficient,unhealthiest and most environmentally
damaging fossil fuel（矿物燃料）.Natural gas reserves could fill 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.Less-polluting renewable energy
sources offer a more practical long-term energy solution. "Renewable"refers to the fact t
hat these resources are not used faster than they can be replaced.
Hydroelectric（水力发电的）power is now the most common form of renewable energy,
supplying around 20%of world electricity.China's Three Gorges Dam 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 use tidal（潮汐的）currents in the open
sea opened in Norway. It is designed like windmill（风车）,but others take the form of
turbines.
As prices fall,wind power has become the fastest growing type of electricity generation一
quadrupling（翻两番）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 harmless一they can intertere with radar,alter
climate and kill sea birds.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.
China's Three Gorges Dam
A:is the first hydroelectric dam in the world.
B:is of the same size as the US's Hoover Dam.
C:can generate around 3%of world electricity.
D:is the largest hydroelectric dam in the world.

共用题干
第一篇
A Sunshade（遮阳伞）for the Planet
Even with the best will in the world,reducing our carbon emissions is not going to prevent global warming. It has become clear that even if we take the most strong measures to control emissions, the uncertainties in our climate models still leave open the possibility of extreme warming and rises in sea level. At the same time,resistance by governments and special interest groups makes it quite possible that the actions suggested by climate scientists might not be implemented soon enough.
Fortunately,if the worst comes to the worst,scientists still have a few tricks up their sleeves. For the most part they have strongly resisted discussing these options for fear of inviting a sense of complacency that might thwart efforts to tackle the root of the problem. Until now,that is a growing number of researchers are taking a fresh look at large-scale"geoengineering"projects that might be used to counteract global warming."I use the analogy of methadone,"says Stephen Schneider,a climate researcher at Stanford University in California who was among the first to draw attention to global warming."If you have a heroin addict,the correct treatment is hospitalization,and a long rehab. But if they absolutely refuse,methadone is better than heroin."
Basically the idea is to apply"sunscreen"to the whole planet. One astronomer has come up with a radical plan to cool Earth:launch trillions of feather-light discs into space,where they would form a vast cloud that would block the sun's rays.It's controversial,but recent studies suggest there are ways to deflect just enough of the sunlight reaching the Earth's surface to counteract the warming produced by the greenhouse effect. Global climate models show that blocking just 1.8 percent of the incident energy in the sun's rays would cancel out the warming effects produced by a doubling of greenhouse gases in the atmosphere.That could be crucial,because even the most severe emissions control measures being proposed would leave us with a doubling of carbon dioxide by the end of this century,and that would last for at least a century more.
According to the first two paragraphs,the author thinks that______.
A:strong measures have been taken by the government to prevent global warming
B:It is impossible to prevent global warming by reducing carbon emissions
C:despite the difficulty,scientists have some options to prevent global warming
D:actions suggested by scientists will never be realized