1.An important property of a scientific theory is its ability to_____ further research and further thinking about a particular topic. (A)stimulate (B) renovate (C) arouse (D) advocate
2.Although architecture has artistic qualities, it must also satisfy a number of important practical _______. (A)obligations (B) regulations (C) observations (D) considerations 3.Life insurance is financial protection for dependents against loss_____ the breadwinner’s death. (A) at the cost of (B) on the verge of (C) as a result of (D)for the sake of 4.In education there should be a good _____among the branches of knowledge that contribute to effective thinking and wise judgment. (A)distribution (B) balance (C) combination (D) assignment 5.The American dream is most _____during the periods of productivity and wealth generated by American capitalism. (A)plausible (B) patriotic (C) primitive (D) partial 6.Poverty is not ____in most cities although, perhaps because of the crowded conditions in certain areas, it is more visible there. (A) rare (B) temporary (C) prevalent (D) segmental 7.People who live in small towns often seem more friendly than those living in _____ populated areas. (A) densely (B) intensely (C) abundantly (D) highly 8.As a way of ____ the mails while they were away, the Johnson’s asked the cleaning lady to send little printed slips asking the senders to write again later. (A) picking up (B) coping with (C) passing out (D) getting across 9.Tom’s mother tried hard to persuade him to _____ from his intention to invest his savings in stock market. (A)pull out (B) give up (C) draw in (D) back down 10.An increasing proportion of our population, unable to live without advanced medical _____, will become progressively more reliant on expensive technology. (A) interference (B) interruption (C) intervention (D) interaction 11.These causes produced the great change in the country that modernized the ____of higher education from the mid -1860’s to the mid-1880’s. (A)branch (B) category (C) domain (D) scope 12.Nobody yet knows how long and how seriously the____ in the financial system will drag down the economy. (A)shallowness (B) shakiness (C) scantiness (D) stiffness 13.Crisis would be the right term to describe the ______ in many animal species. (A)minimization (B) restriction (C) descent (D) decline 14.The city is an important railroad ____ and industrial and convention center. (A)conjunction (B) network (C) junction (D) link 15.Prof. White, my respected tutor, frequently reminds me to ____ myself of every chance to improve my English. (A)assure (B) inform (C) avail (D) notify 16.Researchers discovered that plants infected with a virus give off a gas that ____ disease resistance in neighboring plants. (A)contracts (B) activates (C) maintains (D) prescribes 17.Corporations and labor unions have _____ great benefits upon their employees and members as well as upon the general public. (A) conferred (B) granted (C) flung (D) submitted 18.The movement of the moon conveniently provided the unit of month, which was _____ from one new moon to the next. (A)measured (B) reckoned (C) judged (D) assessed 19.The judge ruled that the evidence was inadmissible on the grounds that it was ____to the issue at hand. (A) irrational (B) unreasonable (C) invalid (D) irrelevant 20.Fuel scarcities and price increases ___ automobile designers to scale down the largest models and to develop completely new lines of small cars and trucks. (A) persuaded (B) prompted (C) imposed (D) enlightened