题目内容
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
There are thousands of coral reefs(珊瑚礁) in the world; Unfortunately, however, they are now in serious danger. More than one-third are in such bad shape that they could die within ten years. ?? 1.?? Here are the three main causes discovered.
The first cause is pollution on land. The pollutants run with rainwater into rivers and streams, which carry the poisons into the ocean.?? 2.?? So they will be easily infected(感染) with diseases.
? 3.?? Higher ocean temperatures kill the important food source(来源) for the coral—the algae, the tiny greenish-gold water plants that live on coral.?? 4.?? This process has happened more and more frequently in recent years.
The last factor contributing to the disappearance of coral reefs is people. People sometimes crash into reefs with their boats, breaking off large blocks of coral.?? 5.??? Moreover, some people even break coral off to collect for souvenirs since it is so colorful and pretty.
A. Global warming is another reason.
B. Many might not even last that long!
C. Divers who walk on reefs can also do serious damage.
D. Reefs provide a home for 25% of the fish in the ocean.
E. Chemicals from the poisons kill reefs or make them weak.
F. Steps must be taken now to stop over-fishing and pollution of the oceans.
G. When the algae die, the coral loses its color and it also dies in the end.
1.B
2.E
3.A
4.G
5.C
【解析】
试题分析：文章介绍全球的海洋珊瑚礁正在受到破坏，文章介绍了对珊瑚造成危害的不同的原因。
1.考查上下文串联和句意理解：根据上文：More than one-third are in such bad shape that they could die within ten years.可知：很多甚至可能不会持续那么久，答案是：B
2.考查上下文串联和句意理解：根据上文：The pollutants run with rainwater into rivers and streams, which carry the poisons into the ocean.可知：来自毒品的化学物质会杀了珊瑚礁或让它们变得虚弱。答案是：E
3.考查上下文串联和句意理解：根据下文：Higher ocean temperatures kill the important food source(来源) for the cora可知：全球气温变暖是另外一个问题，答案是：A
4.考查上下文串联和句意理解：根据上文：the algae, the tiny greenish-gold water plants that live on coral.可知：当水藻死了，珊瑚会失去颜色，最终死亡，答案是：G
5.考查上下文串联和句意理解：根据上文：The last factor contributing to the disappearance of coral reefs is people.可知：在礁石上行走的潜水员也会造成伤害。答案是：C
考点：考查信息匹配
第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
In 1990 a report was published about what the earth might be like 20 years from then on. 71 According to the report,the picture of the earth in the year 2010 is not a pleasant one. 72 The population could be as large as 6300 million,almost 2150 million more than in 1985.More people would move into cities ,especially cities in developing countries.Cities like Cairo and Jakarta probably would each have 15 million by then.
73 Farmers will grow 90% more food than they did in 1985,but most of the increase would be in countries that already produce enough food for their people. 74 Poor farming ways are destroying large areas of crop land,changing farms into deserts.More farmland is lost as cities become larger and more houses are built.Air pollution will get worse as industrial countries burn more coal and oil.Many of the world's forests could disappear as more and more trees are cut down.Energy will continue to be a serious problem. 75 They only workde out the situation that exists today.By changing the situation,by settling the problems,the picture can be changed.There is still time for the nations of the world to work out a plan of action.But they warned that waiting too long to make de cisions would greatly reduce the chances of success.
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A．Food production will increase,but not enough to feed all the people. |
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B．The report was a result of a three - year study. |
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C．Later on,more reports came out one by one. |
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D．The world will be more crowded because the population will continue to grow. |
E.Experts believe enough food will be produced in developing countries very soon.
F.The experts say their picture of the earth for the year 2010 may be wrong.
G.Little increase is expected in South Asia,Africa and the Middle East.