38． In our class, when the bell rang and the teacher came in, it was a _____ for every student to stand up.

A. signal　　　　　　　　　 B. chance　　　　　　　 C. sign　　　　　　　　　　　 D. command

37． A good friend is one who is always with you _____ thick and thin.

A. going down　　　　　 B. going through　　 C. going up　　　　　　　 D. going around

36． The operation of _____ the connected (连体的) twins got close to _____.

A. dividing; being finished　　　　　　　　　　　 B. separating; being finished

C. separating; finishing　　　　　　　　　　　　　 D. dividing; finishing

34． -Which country _____ the next Olympic Games?

-Brazil.

A. is held　　　　　　　　　 B. is going to hold　 C. is to host　　　　　　　 D. is hosted

33． During the spring festival, the railway put on _____ trains to make people go home more conveniently (方便地).

A. particular　　　　　　 B. special　　　　　　　　 C. unusual　　　　　　　　 D. separate

32． Soon after the Wenchuan earthquake all means _____ to get into those worst- stricken areas.

A. was tried　　　　　　　 B. had been tried　　 C. were tried　　　　　　 D. have tried

31． Going to watch a live show is _____ from watching one on TV.

A. quite a different experience　　　　　　　　 B. quite different experience　　　　　

C. a quite different experience　　　　　　　　 D. quite new experiences　

30． Scientists overcame(克服) much difficulty they had _____ that technological problem _____ they finally could send the manned (载人的) spaceship up into space.

A. to solve; until　　　 B. solving; before　 C. to solve; before　　 D. solving; until

29． It’s helpful to put children in _____ where they can see themselves differently.

A. a choice　　　　　　　 B. an accident　　　　 C. a scene　　　　　　　　 D. a situation