A. surface B.atmosphere C.attitude D.bent

18.This river forms a natural _______ between China and Korea.

　A. boundary B.string C.spot D.zone

19.She is already 16years old. But she _______as if she were still a little girl.

　A. believes B.absorbs C.accrses D.behaves

20.We are _______ at the rapid progress Mark has made in this semester.

　A. distinguished B.annoyed C.astonished D.scored

21.The doctors _______ the medicines to the people in the flood area.

　A. distributed B.packed C.prayed D.undertook

22.Much of the news provided by this newspaper is _______, not foreign.

　A. domestic B.strain C.purchase D.murder

23.He tried to _______relations with his former wife but he failed.

　A. measure B.maintain C.shelter D.reply

24.He _______ to study harder in the future so that he could have more opportunities to find a better job.

　A. resolved B.resorted C.requested D.reserved

25.The _______ work continued for more than a week but there was still no sign of the missing boy.

　A. research B.rescue C.vessel D.vast

26.Many kinds of animals are believed to have _________ from the earth

　A. withdrawn B.vanished C.found D.hung

27.The engineers in this lab spent several weeks _______ their plans for the new bicycle.

　A. counting B.stripping C.elaborating D.casting

28.Pine trees are usually believed to _______ cold weather.

　A. guard B.accomplish C.roar D.endure

29.Free medical service is _______ to nearly all the college students in China.

　A. favorite B.available C.convenient D.average

30.After working for twenty hours without any rest, the doctors were _______.

　A. exhausted B.mounted C.wrapped D.restored

31.The college students in China are _______ from smoking on campus because this will do them no good.

A. discouraged B.observed C.obeyed D.obtained

32.Professor Smith is also the _______ of the international program office. If you have any problem when you study here, you may go to him for help.

　A. detective B.president C.manager D.director

33.We won’t allow any

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