The coal boss took the risk of making money the safety of his workers. [ ]A. in need of B. instead of C. in case of D. regardless of 题目和参考答案——青夏教育精英家教网—

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The coal boss took the risk of making money ________ the safety of his workers.

[ ]

A. in need of
B. instead of
C. in case of
D. regardless of

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Some scientists warn that ice near the Earth’s Poles may indeed be melting. This “polar meltdown” may be the first sign that the Earth is heating up. We could be in very serious trouble if this trend continues. It is estimated that a meltdown of as little as 10 percent of Antarctica’s ice would raise sea levels around the globe by 4 to 9 meters. Floods would cover low-lying regions and turn coastal cities like New York and New Orleans into real life underwater world.

Scientists first predicted in the 1970s that heat trapped in the Earth’s atmosphere could cause a polar meltdown. Many now believe that human activities are turning up the heat. When we burn fossil fuels like coal and oil, we add carbon dioxide(CO2) gas to the Earth’s atmosphere. Cutting down trees also makes CO2 levels raise because trees normally soak up CO2 to make food. Scientists say higher CO2 levels strengthen the “greenhouse effect” and could increase the Earth’s temperature. In fact, CO2 levels have risen by 30 percent since the Industrial Revolution of the 18th and 19th centuries.

Over the past three years, satellite measurements have shown a sea level rise of about a quarter inch worldwide. “If nothing is done to reduce fossil-fuel pollution and global warming, sea levels will rise even more.” says geologist Richard Alley.

But even Alley admits that a polar meltdown would take time. The ice in Antarctica and Arctic locks up nearly nine times the volume of water contained in all the world’s rivers and lakes. These are such big “ice cubes” and it would probably take thousands of years to melt them.

Another scientist Charles Bentley doesn’t think a meltdown will happen at all. “Even if warmer temperatures begin to melt polar-ice,” he says, “the excess moisture would most likely be redeposit as snow.” In other words, the melted ice would evaporate into the atmosphere, refreeze, and fall as rain and snow over the Poles.

What consequence of global warming is mentioned in the passage?

A. More tropical storms. B. More tropical diseases.

C. Changes in farm productivity. D. Coastal flooding.

Which of the following statements does the second paragraph support?

A. CO2 in the atmosphere cannot keep the heat from escaping into space.

B. The increase of CO2 gas may warm the planet and help to melt polar ice.

C. Cutting down trees helps to greatly reduce CO2 levels.

D. The end of the short-lived age of fossil fuels is already in sight.

Geologist Richard Alley most likely agrees that _______.

A. the sea-level rise can be prevented by cutting back on energy-consuming activities

B. the recent breaking off of ice blocks from Antarctica is just a natural part of a long-term cycle

C. Antarctica temperatures have significantly changed since the Industrial Revolution

D. the polar meltdown may be an accidental change of climate rather than a sign of global warming

Charles Bentley believes that a polar meltdown will not occur because _______.

A. governments around the world are beginning to reduce CO2 levels in the air

B. a melting of the polar ice cannot be achieved with the present technologies

C. the melted ice in the polar areas would change into snow and rain over the Poles

D. the sun’s heat would have no chance of being absorbed by the polar ice

In which paragraph does the author mention the immense quantities of polar ice?

A. In the second paragraph. B. In the third paragraph.

C. In the fourth paragraph. D. In the fifth paragraph.

It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is actually worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a “greenhouse effect" - holding in heat reflected from the earth and raising the world's average temperature. If this view is correct and the world's temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.

Another view, less widely held, is that increasing particulate (废气排往空中而形成的微粒、颗粒) matter in the atmosphere is blocking sunlight and lowering the earth's temperature ─ a result that would be equally disastrous. A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas. At present we do not know for sure that either of these conditions will happen (though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we are very lucky, the two tendencies will offset each other and the world's temperature will stay about the same as it is now.

As pointed out at the beginning of the passage, people used to think that air pollution ______.

A. caused widespread damage in the countryside

B. affected the entire eastern half of the United States

C. had damaging effects on health

D. existed merely in urban and industrial areas

As far as the greenhouse effect is concerned, the author ______.

A. shares the same view with the scientists

B. is uncertain of its occurrence

C. rejects it as being ungrounded

D. thinks that it will destroy the world soon

The underlined word “offset" in Para. 2 could best be replaced by______.

A. slip into B. make up for C. set up D. catch up with

This passage is mainly concerned with ______.

A. the greenhouse effect B. the burning of fossil fuels

C. the potential effect of air pollution D. the possibility of a new ice age

第三部分：阅读理解（共20小题，每小题2分，满分40分）
Back in the old times, there was an old man, who had spent his life learning many different things. He had traveled to many places as well. “I must be the wisest man in the world.” The man thought to himself. As he grew old, he felt that there was no need for him to learn any longer because of the arrival of the end of life. Every day he spent his time complaining about many things. It seemed that he was satisfied with nothing his life.
One day while he was sitting in the chair, there was a knock on the door. The old man opened the door and found a little girl，whose face was covered with soil． “Can I borrow some fire ?”the girl whispered softly．At that time，matches hadn’t been invented，and people used to borrow fire from neighbors by loading a bucket （铲子） with a few hot coals．It was much better than trying to start a fire with sticks．
Not finding a bucket in her hand，the old man asked impatiently , “Well , where’s your bucket ? How are you going to get the coals home ?” However , the girl said she didn’t have one and went to the fireplace ．She put a pile of cold ashes into her hand and put the coal on top of the ash heap （灰堆）．“Thanks !”she said on her way out．Seeing the girl’s happy and grateful appearance, the man was moved and felt ashamed of himself．“If I can learn something new from a little farm girl, there must be a lot I still don’t know．I’d better get busy while I still have time．”
1．We can learn from the first paragraph that the old man ____________________
A．failed to know what he needed to do
B．lost confidence in himself
C．lost the fame of the world’s wisest man
D．often expressed his dissatisfaction with life
2．How did the girl change the old man’s opinions ?
A．By solving an old problem in a new way
B．By following the old man’s instructions
C．By pointing out his mistakes politely
D．By helping the old man to make a fire
3．It can be inferred from the underlined part in me last paragraph that the old man would become_______________．
A．more confident                 C．more modest
C．more modest                  D．more intelligent
4．What can we infer from the text ?
A．Failure is the mother of success         B．Action speaks louder than words
C．It’s never too late to learn            D．Great minds think alike

It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic. Today, we know that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be affected by air pollution. Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels(coal and oil) creating a greenhouse effect-holding in heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be under water.

Another view, less widely held, is that increasing particulate matter in the atmosphere is blocking sunlight and lowering the earth’s temperature-a result that would be equally disastrous（灾难的）. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. At present we do riot know for sure that either of these conditions will happen(though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely). Perhaps, if we very lucky, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.

1.As pointed out at the beginning of the passage, people used to think that air pollution ______.

A．caused widespread damage in the countryside

B．affected the entire eastern half of the United States

C．almost brought worldwide effect

D．existed merely in urban and industrial areas

2.As far as the greenhouse effect is concerned, the author _____________.

A．shares the same view with the scientists

B．is uncertain of its occurrence

C．rejects it as being ungrounded（无根据的）

D．thinks that it will increasingly destroy the world soon

3.It can be inferred from the passage that .

A．raising the world’s temperature a little would not do much harm to life on the earth

B．lowering the world’s temperature a little would lead to agricultural disasters

C．almost no temperature variations have occurred over the past decade

D．the world’s temperature will remain stable forever

4.This passage is primarily concerned with .

A．the greenhouse effect in the world

B．the measures to adjust the climate

C．the potential effect of air pollution

D．the measures to protect the environment

The world itself is becoming much smaller by using modern traffic and modern communication means （通讯设备）.Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.

Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, Man moved to another place. But this is no longer true. Man is now slowly polluting the whole world.

Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.

Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air.

Pollution by carbon dioxide is now the most dangerous kind of air pollution. It is caused by heavy traffic. It is true that if there are fewer people driving, there will be less air pollution.

The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in population at the same time.

1..

. Hundreds of years ago, the pollution was _________it is today.

A. much easier than B. as easy as C. as hard as D. much less than

2..

Our world is becoming much smaller_________.

A. because the earth is being polluted day and night

B. because science is developing

C. because of the rise in population

D. because the earth is blown away by the wind every year

3..

Air pollution is the most serious kind of pollution because_________.

A. it does harm to all living things in the world B. it makes much noise

C. it makes our rivers and lakes dirty D. it makes us angry more easily

4..

Which of the following is NOT the possible way to reduce air pollution?

A. Stop people from burning coal in the houses and factories in the city

B. Stop putting dirty smoke into the air

C. Encourage people to go to work by bike or on foot instead of driving a car

D. Don’t throw rubbish into the river.

5..

Which of the following is NOT true?

A. The problem of pollution is not so serious because there are not so many people living on the earth.

B. The pollution of the earth grows as fast as the world’s population does.

C. If people could go to work by bike ,it would be helpful against the problem of carbon dioxide.

D. Many countries are making rules to fight against pollution.

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