词汇选项：

　　1.These are the motives for doing it.

　　A reasons
　　B excuses
　　C answers
　　D replies

　　2.The river widens considerably as it begins to turn west.

　　A extends
　　B stretches
　　C broadens
　　D bends

　　3.Many economists have given in to the fatal lure of mathematics.

　　A error
　　B puzzle
　　C attraction
　　D contradiction

　　4.With immense relief I stopped running.

　　A no
　　B little
　　C scarce
　　D enormous

　　5.A great deal has been done to remedy the situation.

　　A maintain
　　B improve
　　C preserve
　　D protect

　　6.John is collaborating with Mary in writing an article.

　　A cooperating
　　B marrying
　　C combining
　　D arguing

　　7.He will consolidate his power.

　　A strengthen
　　B win
　　C abandon
　　D unite

　　8.Many scientists have been probing psychological problems.

　　A solving
　　B exploring
　　C settling
　　D handling

　　9.Hearing problems may be alleviated by changes in diet and exercise habits.

　　A removed
　　B cured
　　C treated
　　D lessened

　　10.The conclusion can be deduced from the premise.

　　A gone
　　B derived
　　C done
　　D come

　　11.The food is insufficient for three people.

　　A scarce
　　B short
　　C marginal
　　D inadequate

　　12.Most of the butterflies perish in the first frosts of autumn.

　　A die
　　B disappear
　　C migrate
　　D vanish

　　13.But ultimately he gave in.

　　A undoubtedly
　　B certainly
　　C finally
　　D necessarily

　　14.It is a complicated problem.

　　A strange
　　B complex
　　C difficult
　　D unusual

　　15.In Britain and many other countries appraisal is now a tool of management.

　　A evaluation
　　B production
　　C efficiency
　　D publicity

　　【参考答案】

　　1. A 2. C 3. C 4. D 5. B

　　6. A 7. A 8. B 9. D 10. B

　　11. D 12. A 13. C 14. B 15. A