Our energy will soon come to an end if we don’t__________ it.

A. use

B. save

C. spend

D. take

Choose the word in each group that has the underlined part pronounced differently from the rest.

A. recent

B. efficient

C. faucet

D. receive

Read the passage, choose True or False.

Many people still believe that natural resources will never be used up. Actually, the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out 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 do not approve of using nuclear power because it’s very dangerous. What would happen if there was 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 economical as possible.

Natural resources will never run out.

A. True

B. False

We decided not to go out for meal _________ we were too tired.

A. but

B. because

C. so

D. and

Choose the word in each group that has the underlined part pronounced differently from the rest.

A. carrot

B. hobby

C. boy

D. short

Mary’s eyes are weak, __________, she has to wear glasses.

A. but

B. however

C. and

D. therefore

Read the passage, choose True or False.

All people agree to use nuclear power as an alternative energy.

A. True

B. False

Please turn __________ the gas. I want to cook my lunch.

A. over

B. on

C. in

D. off