38、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

37、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

36、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

35、D

34、The supermarket offers the goods at a _____ low price, hoping to attract more customers.  

33、 It is ______ that all the governments should join hands to prevent H1Ni flu from spreading.  

32、As my friend is so devoted to running his café, his business is sure to _____ soon.   

A. show off           B. set off           C. give off        D. take off  

31、With so many noises from the streets, I can’t ______ and go on doing my research work.

A. feel down         B. turn down      C. settle down    D. set down

30、Thank you ever so much for your congratulations and good wishes. I hope I can ______ to them.

A. look up            B. live up          C. add up             D. set up

29、There is no end to learning, so we should never _______ ourselves with a little book knowledge.

A. content                           B. supply                        C. occupy                D. meet