－You can’t enter the building without ________ permission．

－I’ve lost ________ permission card．

A．the, a

B．a, the

C．不填, the

D．不填，不填

It is difficult to ________ the exact meaning of some words when you translate them into a foreign language．

A．show off

B．turn out

C．bring out

D．take to

We can see monuments here and there．Those who have made great ________ to human beings and society will never be forgotten．

A．advance

B．progress

C．contribution

D．achievement

Recently, there ________ a boom in population mobility, and according to the survey in 2000, 17 percent of the population ________ every year．

A．is; moves

B．has been; moves

C．is; move

D．has been; move

Anyone who has spent time with children ________ the difference in the way boys and girls ________ similar situations．

A．aware of; respond to

B．is aware of; respond to

C．aware; responding

D．is aware of; respond

If the safety protections against the accidents ________, the miners ________ a chance to survive then．

A．were taken; would have

B．had been taken; didn’t have

C．had been taken; would have had

D．were taken; would have

Whether age is happy or unpleasant depends less on money or on health than ________ on your ability to have fun．

A．it is

B．it was

C．it depends

D．it does

Countless people in developing countries no longer suffer malnutrition．________, poverty remains a problem worldwide．

A．While

B．Nevertheless

C．Besides

D．In addition

Come to me early tomorrow morning．If I ________, wake me up．

A．sleep

B．will be sleeping

C．was still sleeping

D．am still sleeping

China's population is expected to increase to about 1.5 billion in 2040, ________ it will start to decline slowly．

A．where

B．after which

C．on which

D．which