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15 tháng 5 2019

XX. Read the text then circle the best answer.

Many people still believe that natural resources will never be used up.Actually,the worlds energy resources are limited.Nobody knows exactly how much fuel is left. However, we should use them economically and try to find alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.

However, many people don't approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.

1. According to the passage, using nuclear power is...............

A. dangerous B. interesting C. safe D. cheap

2. Radioactivity from nuclear power.................

A. is harmless

B. alters a new kind of energy

C. is necessary to cure diseases

D. causes cances and may badly affect the future generations

3. How much fuel is left?

A. No one knows exactly B. Let' s use it as much as we would like

C. There is a lot of fuel D. It will never be used up

4. We should use coal, oil and gas...............

A. carelessly B. as economically as possible

C. as much as possible D. all are incorrect