41. the grey building is where the workers live， and the white one is where the spare parts _b_. [spare parts零部件]
a are producing b are produced c produced d being produced
48. _a_ a teacher in a university， it is necessary to have at least a master’s degree.
a to become b become c one become d on becoming
master’s degree 硕士学位; 当介词on后面加动词ing形式时表示时间概念“在…之后”。
49. the little man was _c_ more than one metre fifty tall.
a nearly b quite c hardly d almost
hardly more than 不足，不到。
36. the little man was _b_ one metre fifty high.
a almost more than b hardly more than c nearly more than d as much as
53. medical care reform has become this country’s most important public health _c_.
a question b stuff c matter d issue
matter 事物，事情; question 有疑而问，并且有待回答的问题;
questions and answers q & a 问与答; issue n. 问题(强调的是政治方面的问题)。
1999年前，台湾问题taiwan issue;1999年后，台湾问题taiwan question，态度转变。
60. if you don’t like to swim， you _b_ stay at home.
a should as well b may as well c can as well d would as well
may as well 还是，到不如。
70. they are teachers and don’t realize _a_ to start and run a company.
a what it takes b what takes it c what they take d what takes them
start and run a company 创立并经营一家公司。
3. a healthy life is frequently thought to be _d_ with the open countryside and homegrown food.
a tied b bound c involved d associated
be involved with 牵涉，卷入; be associated with 与。..相关，联系起来。
homegrown food 自家种的食品; wine 葡萄酒; house wine 自家的酒。
33. the traditional approach _a_ with complex problems is to break them down into smaller， more easily managed problems.
a to dealing b in dealing c dealing d to deal
approach n. 方式，方法; approach to + 动名词。
43. it’s already 5 o’clock now. don’t you think it’s about time _c_?
a we are going home b we go home c we went home d we can go home
it’s about time后面加句子，要用一般过去时来体现虚拟语气。
44. lightning is a _a_ of electrical current from a cloud to the ground or from one cloud to another. [lightning n. 闪电]
a rush b rainbow c rack d ribbon
rush n. 冲撞，冲击，撞击; rainbow n. 彩虹，幻想; rack n. 支架，挂架;
ribbon n. 缎带，丝带，绒带。
46. i’ve already told you that i’m going to buy it， _a_.
a however much it costs b however does it costs much
c how much does it cost d no matter how it costs
however在这里不表示转折，而是句子的引导词，这种情况下它相当于：no matter how。
意思是，我已经决定要买了，不管多少钱。
47. new york _a_ second in the production of apples， producing 850，000，000 pounds this year. [rank 排名，名列第几，强调名列前茅;big apple 纽约]
a ranked b occupied c arranged d classified