161.Because of a _____ engagement, Lora couldn't attend my birthday party last Saturday.
　　A. pioneer B. premature  C. prior  D. past
　　162. Not having a good command of English can be a serious   _____  preventing you from achieving your goals.
　　A. obstacle B. fault   C. offense   D. distress
　　163. It's very   _____  of you not to talk aloud while the baby is asleep.
　　A. concerned     B. careful   C. considerable   D. considerate
　　164. Many a player who had been highly thought of has  _____  from the tennis scene.
　　A. disposed    B. disappeared    C. discouraged   D. discarded
　　165. The university has launched a research center to develop new ways of  _____ bacteria which have become resistant to drug treatments.
　　A. regulating     B. halting  C. interrupting   D. combating
　　166. The   _____ goal of the book is to help bridge the gap between research and teaching, particularly the gap between researchers and teachers.
　　A. joint    B. intensive   C. overall   D. decisive
　　167. The rapid development of communications technology is transforming the _____ in which people communicate across time and space.
　　A. route   B. transmission C. vision   D. manner
　　168. There is no  _____  evidence that people can control their dreams, at least in experimental situations in a lab.
　　A. rigid     B. solid C. smooth   D. harsh
　　169. Every culture has developed  _____ for certain kinds of food and drink, and equally strong negative attitudes toward others.
　　A. preferences    B. expectations C. fantasies  D. fashions
　　170. It is reported that Uruguay understands and  _____  China on human rights issues.
　　A. grants      B. changes   C. abandons   D. backs

　　171. Only a few people have   _____ to the full facts of the incident.
　　A. access    B. resort   C. contact   D. path
　　172. His trousers  _____ when he tried to jump over the fence.
　　A) cracked    B) split   C) broke D) burst
　　173. So far, _____ winds and currents have kept the thick patch of oil southeast of the Atlantic coast.
　　A. governing    B. blowing  C. prevailing   D. ruling
　　174. The author was required to submit an  _____ of about 200 words together with his research paper.
　　A. edition   B. editorial   C. article   D. abstract
　　175. Critics believe that the control of television by mass advertising has ______ the quality of the programs.
　　A. lessened   B. declined  C. affected   D. effected
　　176. There is a fully ______ health center on the ground floor of the main office building.
　　A. installed   B. equipped  C. provided   D. projected
　　177. For more than 20 years, we've been supporting educational programs that _____ from kindergartens to colleges.
　　A. move   B. shift  C. range   D. spread
　　178. The test results are beyond______; they have been repeated in labs all over the world.
　　A. negotiation   B. conflict  C. bargain   D. dispute
　　179. I was so ______in today's history lesson. I didn’t understand a thing.
　　A. amazed   B. neglected  C. confused   D. amused
　　180. It ______ you to at least 50% off the regular price of either frames or lenses when you buy both.
　　A. presents   B. entitles  C. credits   D. tips

　　181. Deserts and high mountains have always been a ______ to the movement of people from place to place.
　　A. barrier   B. fence  C. prevention   D. jam
　　182. In order to make things convenient for the people, the department is planning to set up some ______ shops in the residential area.
　　A. flowing   B. drifting  C. mobile   D. unstable
　　183. Mr. Smith says: "The media are very good at sensing a mood and then ______ it."
　　A. overtaking   B. enlarging  C. widening   D. exaggerating
　　184. The board of the company has decided to ______ its operations to include all aspects of the clothing business.
　　A. multiply   B. lengthen  C. expand   D. stretch
　　185. His business was very successful, but it was at the ______ of his family life.
　　A. consumption   B. credit  C. exhaustion  D. expense
　　186. First published in 1927, the charts remain an ______ source for researchers.
　　A. identical   B. indispensable  C. intelligent   D. inevitable
　　187. Doctors warned against chewing tobacco as a ______ for smoking.
　　A. relief   B. revival  C. substitute   D. succession
　　188. When carbon is added to iron in proper ______the result is steel.
　　A. rates   B. thicknesses  C. proportions   D. densities
　　189. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own.
　　A. sample   B. reproduction  C. shadow   D. echo
　　190. There is a _____ of impatience in the tone of his voice.
　　A. hint   B. notion  C. dot   D. phrase