英语四六级备考练习1摸底：Unit 841. For many patients, institutional care is the most _ and beneficial form of care. A) pertinent B) appropriate C) acute D) persistent42. Among all the changes resulting from the _ entry of women into the work force, the transformation that has occurred in the women themselves is not the least important. A) massive B) quantitative C) surplus D) formidable 注：massive 大量的43. Mr. Smith became very _ when it was suggested that he had made a mistake. A) ingenious B) empirical C) objective D) indignant 注：indignant 愤怒的44. Rumours are everywhere, spreading fear, damaging reputations, and turning calm situations into _ ones. A) turbulent B) tragic C) vulnerable D) suspicious45. The _ cycle of life and death is a subject of interest to scientists and philosophers alike. A) incompatible B) exceeding C) instantaneous D) eternal注：eternal 永恒的，永远的（六级最爱）46. She remains confident and _ untroubled by our present problems. A) indefinitely B) infinitely C) optimistically D) seemingly 注：infinitely 非常地，无限地，极大地47. Fiber-optic cables can carry hundreds of telephone conversations _. A) simultaneously B) spontaneously C) homogeneously D) contemporarily 注：三剑客词汇：simultaneously，spontaneously，contemporarily 48. The police were alerted that the escaped criminal might be in the _.A) vain B) vicinity C) court D) jail 注：vicinity 附近，邻近49. Whether you live to eat or eat to live, food is a major _ in every familys budget. A) nutrition B) expenditure C) routine D) provision 注：1. expenditure 花费 2. budget 预算（六级最爱）50. Now a paper in Science argues that organic chemicals in the rock come mostly from _ on earth rather than bacteria on Mars. A) configuration B) constitution C) condemnation D) contamination 注：2道理科题；2道文科题；1道环保题。51. There is much I enjoy about the changing seasons, but my favorite time is the _ from fall to winter. A) transmission B) transformation C) transition D) transfer 注：1. transmission 广播电视节目的传送；疾病的传播；文化的传递 2. transformation 变革 3. transition 季节的过度，时间的更替，社会制度的转型 4. transfer 转学，调任工作52. I think we need to see an investment _ before we make an expensive mistake. A) guide B) entrepreneur C) consultant D) assessor 注：consultant 顾问 53. The _ on this apartment expires in a years time. A) treaty B) leaseC) engagement D) subsidy注：lease 租约54. The elderly Russians find it hard to live on their state _. A) pensions B) earnings C) salaries D) donations注：pensions 养老金55. There is supposed to be a safety _ which makes it impossible for trains to collide. A) applianceB) accessory C) machine D) mechanism56. After four years in the same job his enthusiasm finally _. A) deteriorated B) dispersed C) dissipated D) drained 注：1. drain （强调结果）耗尽 2. disperse （强调过程） 3. dissipate （强调过程） 57. No one can function properly if they are _ of adequate sleep. A) deprived B) ripped C) stripped D) contrived注：deprive of 剥夺（六级最爱） 58. For years now, the people of that faraway country have been cruelly _ by a dictator. A) depressed B) immersed C) oppressed D) cursed注：1. oppress 压制 2. curse 诅咒59. Ever since the rise of industrialism, education has been _ towards producing workers. A) harnessed B) hatched C) motivated D) geared 注：gear 调整以适应60. The prospect of increased prices has already _ worries. A) provoked B) irritated C) inspired D) hoisted注：provoke 引起，引发61. The suspect _ that he had not been in the neighbourhood at the time of the crime. A) advocated B) alleged C) addressed D) announced62. Although the colonists _ to some extent with the native Americans , the Indians influence on American culture and language was not extensive. A) migrated B) matched C) mingled D) melted 注：mingle 混合（六级最爱） 63. E-mail is a convenient, highly democratic informal medium for conveying messages that _ well to human needs. A) adheres B) reflects C) conforms D) satisfies注：conform to 表符合 64. The wings of the bird still _ after it had been shot down. A) slapped B) scratched C) flapped D) fluctuated注：1. flap 拍动 2. slap 掴耳光 3. scratch 用爪子抓、刮、挠；scratch your head 思考；scowl 皱眉头 4. fluctuate 波动65. The disagreement over trade restrictions could seriously _ rela