16. China and U.S. made ______trade agreement.
　　A. unilateral
　　B. unanimous
　　C. sophisticated
　　D. reciprocal

　　17. This young animal, in an encounter with a porcupine lost an eye and got some fifty quills _____in the leg.
　　A. embedded
　　B. anchored
　　C. inserted
　　D. plunged

　　18. Since 1813 reaction to Jane Austen’s novels has oscillated between ____and condescension; but in general later writers have esteemed her works more highly than did most of her literary______.
　　A. dismissal … admirers
　　B. adoration … contemporaries
　　C. disapproval … readers
　　D. approbation …challengers

　　19. There are, as yet, no vegetation types or ecosystems whose study has been ____to the extent that they no longer _____ecologists.
　　A. perfected … hinder
　　B. exhausted … interest
　　C. diverted … arouse
　　D. vetoed … irritate

　　20. The old miser, completely abandoned by his relatives and friends, lived a miserable, _____life.
　　A. frivolous
　　B. extraneous
　　C. ameliorate
　　D. sordid

　　21. Some cinema-goers in Leipzig even confessed that the film had made them feel emotional and slightly _____for their recent past.
　　A. nostalgic
　　B. instinctive
　　C. intuitive
　　D. mirthful

　　22. To ____ this state of affairs, the report recommended a unified scheme, on a regional basis, within which both common and specialized units would cater for the various needs of part-time teachers.
　　A. fortify
　　B. denominate
　　C. assimilate
　　D. rectify

　　23. He failed to carry out some of the provisions of the contract, and now he has to ____the consequences.
　　A. run into
　　B. abide by
　　C. answer for
　　D. step into

　　24. In parts of the Arctic, the land grades into the land fast ice so ____that you can walk off the coast and not know you are over the hidden sea.
　　A. permanently
　　B. imperceptibly
　　C. irregularly
　　D. precariously

　　25. The Chinese, who began systematic astronomical and weather observations shortly after the ancient Egyptians, were assiduous record-keepers, and because of this, can claim humanity’s longer continuous _____of natural events.
　　A. defiance
　　B. documentation
　　C. maintenance
　　D. domination

　　26. Nature’s energy efficiency often _____human technology: despite the intensity of light fireflies produce, the account of heat is negligible; only recently have humans developed chemical light—producing systems whose efficiency _____the firefly’s system.
　　A. engenders … manipulate
　　B. reflects … simulates
　　C. outstrips … manipulate
　　D. inhabits … matches

　　27. Unfortunately, his damaging attacks on the ramifications of the economic policy have been ____by his wholehearted acceptance of that policy’s underlying assumptions.
　　A. supplemented
　　B. diverted
　　C. undermined
　　D. redeemed

　　28.One way of getting a clear perspective on those crimes and criminals causing us most harm, injury, and deprivation is to ______ unreported, unrecorded, and non-prosecuted crimes.
　　A. excavate
　　B. shatter
　　C. stipulate
　　D. relegate

　　29. The _____dog was picked up by the dog-catcher because he had no collar.
　　A. weird
　　B. rebel
　　C. alien
　　D. stray

　　30. By helpful kindness the teacher ______the new boy’s shyness.
　　A. broke off
　　B. broke out
　　C. broke down
　　D. broke up