16.?In order to increase our output, we need to import more production _______.

A. facilities ? ? ? s

17.?When a spacecraft travels, one of the major problems is reentry into the Earth’s _______.

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A. withdrawn ?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

參考答案：16. A ? 17. B ? 18. A ? 19. D ? 20.C ? 21.A ? 22.A ? 23.B ? 24.A ? 25. B ? 26. B ? 27. C ? 28. D ? 29. B ? 30. A