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11.In the United States, the foreign policy is decided by the _ _ _ _ _ _ _ _ government, not by each state.

A. federal B.figure C.scientific D.service

12.He works in our university as a visiting _ _ _ _ _ _ _ , not as a formal faculty member.

A. traditional B.scholar C.nurse D.pilot

13.When you fill in the application form, please use your _ _ _ _ _ _ _ address so that we can contact you easily later.

A. policy B.plain C.permanent D.principal

14.John _ _ _ _ _ _ _ to be a polite man. But in fact he is very rude.

A. pretends B.assures C.affords D.melts

15.We can not trust him any more because he often _ _ _ _ _ _ _ _ his duty.

A. owes B.spoils C.deserts D.neglects

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

A. facilities B.hens C.votes D.artists

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