题目内容

Mankind must have in mind that it will be years, even centuries, ________ the environment recovers from the damage he makes to it．

A.
that
B.
before
C.
when
D.
since

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Mankind must have in mind that it will be years, even centuries, ________ the environment recovers from the damage he makes to it．

that

before

when

since

The twentieth century saw greater changes than any century before: changes for the better, changes for the worse; changes that brought a lot of benefits（益处） to human beings, changes that put man in danger. Many things caused the changes, but, in my opinion, the most important was the progress in science.

Scientific research in physics and biology has vastly broadened our views. It has given us a deeper knowledge of the structure（结构）of matter and of the universe; it has brought us a better understanding of the nature of life and of its continuous development. Technology —the application（应用）of science —has made big advances that have benefited us in nearly every part of life.

The continuation of such activities in the twenty-first century will result in even greater advantages to human beings: in pure science — a wider and deeper knowledge in all fields of learning; in applied science — a more reasonable sharing of material benefits, and better protection of the environment.

Sadly, however, there is another side to the picture. The creativity of science has been employed in doing damage to mankind. The application of science and technology to the development and production of weapons（武器）of mass destruction has created a real danger to the continued existence of the human race on this planet. We have seen this happen in the case of nuclear weapons, Although their actual use has so far occurred only in the Second World War, the number of nuclear weapons that were produced and made ready for use was so large that if the weapons had actually been used, the result could have been the ruin of the human race, as well as of many kinds of animals.

William Shakespeare said, "The web of our life is of a mingled yarn (纱线), good and ill具together. " The above brief review of the application of only one part of human activities – science—seems to prove what Shakespeare said. But does it have to be so? Must the ill always go together with the good? Are we biologically programmed for war?

73.From the fourth paragraph, we can infer that________.

A. a great many nuclear weapons were actually used for war

B. a large number of nuclear weapons should have been used for war

C. the author is doubtful about the ruin of human beings by nuclear weapons

D. the author is anxious about the huge number of nuclear weapons on the earth

74.The underlined word "mingled" in the last paragraph most probably means________.

A. simple B. mixed C. sad D. happy

75.What do you think the author is most likely to suggest if he continues to write?

A. Further application of science to war.

B. More reading of William Shakespeare.

C. Proper use of science in the new century.

D. Effective ways to separate the good from the ill.

A friend of mine met with an accident driving in darkness. His legs were so hurt that he couldn’t move. What was the   1  was he found himself unable to ask for help-his mobile phone went out of   2 as a result of exhausted battery. Nothing could be done but to
3  in cold wilderness. It was 8 hours later that day broke, and then the   4  of the rescue.
It is almost   5  that he could stand the horror in the darkness for so long. Even more surprising was his 6 : “First of all I checked up my   7  conditions and found myself not in fatal danger. As there was no    8  to call for help, I leaned back in my seat trying my best to keep the wound from 9 . In this way I dozed (打盹) off.”
His story put an end to my regret for the   10  of an exploration adventure that happened last year. A group of young men   11  to explore a mountain cave and got lost.
12  to find a way out in the dark cave they were frightened and ran anxiously without a sense of   13 . Finally they fell dead in fear and exhaustion. According to the   14
people that found them, the place where they got lost was only about 10 meters away from the
15  of the cave. If they stayed on the spot when they lost their way and tried to   16
themselves, they would probably sense a faint light glimmering (闪烁) not far away.
Don’t you think that you can compare it with   17  itself? When you meet with obstacles in life and work, you are lost in darkness.   18  you it’s unclear yet and you needn’t put up struggle   19 . It seems to be a negative attitude, 20  a person who can afford to do so must have foresight as well as a great courage in the first place.

Besides giving off gases and dusts into the air, humans produce waste that is poured on the environment. Often, this waste produced by major industries and people is harmful to both nature and human life.

One of the main causes of the large amount of dangerous waste is that people do not realize how large a problem it is. Because it can be simply removed and sent to a landfill(废渣填埋场),the problem is often believed to end there. In addition, industries have often shown an unwillingness to find ways to deal with dangerous waste because of the related expenses. Many industries and governments build simple landfills to store waste, and often just pour waste chemicals into nearby bodies of water. Often, chemicals used for industrial production cause dangerous forms of waste.The amount of these chemicals has increased greatly in the past, but it is often difficult and expensive to get rid of these chemicals or to store them in a way safe to human life and the environment.

Every year, major health problems result from dangerous waste. Sadly, it is often only after someone has died or become seriously ill that governments will take measures to reduce levels of harmful waste.

Some governments have realized how serious the dangerous waste problem is and are now trying to settle this problem. They are also trying to limit the amount of waste industries are allowed to produce.

Not only governments but ordinary people as well must work together to solve the problem. They can choose not to buy those products which require the production of dangerous waste, and produce less harmful waste themselves. Many scientists think that waste production can be cut. The waste can be reduced by at least one third using existing technologies and methods.

1.What would be the best title for the text?

A．Measures of Reducing Dangerous Waste

B．Danger of Harmful Waste to Mankind

C．Dangerous Waste and Water Pollution

D．Environmental Protection

2.According to the text, people ________ .

A．do not produce harmful waste in their daily life

B．do not know where to place the dangerous waste

C．are not clear about how serious the dangerouswaste problem is

D．are not sure about where harmful waste ends

3.What troubles industries most in dealing with the dangerous waste problem?

A．How to get government support.

B．How to increase their production.

C．How to store harmful waste.

D．How to cut down the related costs.

4. What can be inferred from the passage?

A．The polluting industries are not allowed to sell their products.

B．Present technologies have settled the harmful waste problem.

C．Everyone should obey the government rules for the problem.

D．To solve the problem requires the efforts of the whole society.

Mankind must have in mind that it will be years, even centuries, ________ the environment recovers from the damage he makes to it．

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