With alarming regularity, we read about oil tankers（油輪） having accidents near land and the terrible consequences of the oil spills（泄露） on people, nature, and the environment．

Millions of dollars have been used in developing special chemicals to help dismiss the spills 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．

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．There are, of course, long-term effects, but it is usually more serious in the short term．

Nature by itself works better than chemical materials, but when there is a spill we demand that governments act immediately with as much hi-tech knowledge as possible．In 1967 the tanker Torrey Canyon sank off the Sicily 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．

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!

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 has, in the past, been held back by the oil, gas, and coal．

If the world’s millions of cars were 10% more efficient— and the industry could easily produce cars at least twice as efficient — 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．What oil 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 having a discussion ．

B．By making an argument．

C．By giving an example．

D．By drawing a diagram．

3.What does the underlined word “risk” in Paragraph 5 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 accidents according to the passage?

A．We should build safer oil 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．

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