阅读理解。

     On April 24th , another natural disaster - the oil spill(泄露)in the Gulf of Mexico , happened .
Millions of dollars have been used to help stop the spill and to clean up the animals , beaches , and
land spoiled by the oil . Unfortunately , when many of these chemicals are used , more damage is
caused to the environment , especially to lives in the sea .
     But governments seem to accept the risk of transporting millions of tons of oil by ship every day
so that we can fill up our cars and drive around and cause even more environmental damage .
 Interestingly , the biggest companies in the world produce cars , and the next biggest supply the
gasoline to make them run .
     Of all of today's environmental disasters , an oil spill may actually be one of the least serious .
Although oil is poisonous , it is a natural material . In the end , it breaks down naturally . In 1967
the tanker Torrey Canyon sank off the Scilly Isles near the coast of England and spilled 120,000
tones of oil into the ocean . If you go there today , you will find it hard to see any sign that it ever
happened .
     However , we should be thinking more about reducing our dependency on oil . Governments
should be encouraging research into new technologies , such as cars run by solar power, electricity ,
hydrogen , and so on . Much of this research , in the past , was stopped by the oil , gas , and coal .
If the world's millions of cars were 10% more efficient(高效的), we would need many fewer tankers
crossing the oceans each year . If this happened , the risks of oil spills would be reduced , and the air
we breathe would be cleaner and fresher , too .

1. What is the passage mainly talking about ?
A. Oil spills pollution
B. Whatoil pollution is
C. Oil tanker accidents
D. How to reduce oil pollution
2. How does the author support the idea that oil spills are not as serious as people believe ?
A. By giving a description
B. By making an argument
C. By giving an example
D. By drawing a diagram(图表)
3. What does the underlined word " risk " in Paragraph 2 refer to ?
A. Transportation depending more on oil
B. Poisonous oil breaking down naturally
C. Millions of tons of oil spilling into the sea
D. More environmental damage being caused
4. Which suggestion is made for reducing oil tank according to the passage ?
A. We should build safer tankers in the near future
B. We should develop new technologies to cut oil use
C. Tankers should not be allowed to sail near the coastlines
D. Countries should build more oil pipelines under the sea
5. Where can you read this article ?
A. In a story book .
B. In a science magazine .
C. In a novel
D. In a brochure .

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