21. Until then, his family _D_ from him for six months.

A didn't hear B hasn't been hearing C hasn't heard D hadn't heard

until then 直到那时。hear from sb. 收到某人的来信，得到某人的消息。

22. The conference _B_ a full weekbythe time it ends.

A must have lasted B will have lasted C would last D has lasted

见到介词by引导的时间状语，谓语动词就应是完成时态。

24. Physics is _B_ to the science which was called natural philosophy in history.

A alike B equivalent C likely D uniform

be alike to sb. 对于某人来说均是一样的。be equivalent to 相当于。

All tastes are alike to him. 所有味道对他来说都一样。

27. The new appointment of our president _A_ from the very beginning of next semester.

A takes effect B takes part C takes place D takes turns

semester n. 学期；president n. 大学校长；take effect 生效，发生效力；

take part in 参与，参加；take place=happen 发生；takes turn to do sth. 轮流做某事。

28. The president made a _A_ speech at the opening ceremony of the sports meeting, which encouraged the sportsmen greatly.

A vigorous B tedious C flat D harsh

ceremony n. 典礼，仪式；表达在某个典礼上介词用at。vigorous adj. 强劲有力的，强有力的。

harsh adj. 刺耳的，令人不愉快的；flat adj. 平淡无奇的；tedious adj. 冗长无聊的。

29. It is useful to be able to predict the extent _C_ which a price change will affect supply and demand. [extent to]

A from B with C to D for

30. Finding a job in such a big company has always been _D_ his wildest dreams.

A under B over C above D beyond

beyond one’s wildest dreams 做梦也想不到。

31. It is not easy to learn English well, but if you _C_, you will succeed in the end.

A hang up B hang about C hang on D hang onto

hang on 坚持，继续下去。

32. It is reported that _C_ adopted children want to know who their natural parents are.

A the most B most of C most D the most of

most单独出现的时候有两种词性要考虑：1 adv. 非常；2 adj. 大多数的。

the most后面加多音节的形容词或副词构成该句的最高级。

most of + 名词，表示这些名词中的大多数。make the most of 充分利用。

34. _D_ before we depart the day after tomorrow, we should have a wonderful dinner party. [Were they to arrive=If they were to arrive]

A Had they arrived B Would they arrive C Were they arriving D Were they to arrive

35. The strong storm did a lot of damage to the coastal villages: several fishing boats were _A_ and many houses collapsed.

A wrecked B spoiled C torn D injured

collapse vi. 倒塌，坍塌；wreck vt. （船只）遭到破坏。

torn原形是tear，n. 眼泪，vt. 撕裂，撕开。

37. As _B_ announced in today's papers, the Shanghai Export Commodities Fair is also open on Sundays.

A being B is C to be D been

注意两个非限定性定语从句的引导词：as, which。

which在做非限定性定语从句引导词时有两个特点：

1 which前要有逗号与前面句子分开；2 which引导非限定性定语从句指的是前面整句话的内容。

只要引导非限定性定语从句as和which都指一句话内容，区别在于which只能放在它所指那句话的后面，而as可以在前面也可以在后面。

38. You see the lightning _A_ it happens, but you hear the thunder later.

A the instant B for an instant C on the instant D in an instant

the instant=as soon as 一…就…

39. The manager lost his _B_ just because his secretary was ten minutes late.

A mood B temper C mind D passion

lose one’s temper 发脾气。

40. Great as Newton was, many of his ideas _C_ today and are being modified by the work of scientists of our time.

A are to challenge B may be challenged C have been challenged D are challenging

as表示“尽管”时引导从句，从句中的表语可以放在引导词之前构成部分倒装。

41. Please be careful when you are drinking coffee in case you _D_ the new carpet.

A crash B pollute C spot D stain

pollute vt. 污染；spot n. 地点，场所，斑点，污点；v. 使…上有斑点、污点。

spotted dog 斑点狗。stain v. 弄脏，玷污，染色。

59. The tomato juice left brown _A_ on the front of my jacket.

A spot B point C track D trace

42. I'd rather read than watch television; the programs seem _B_ all the time.

A to get worse B to be getting worse C to have got worse D getting worse

all the time 始终，一直。

43. Convenience foods which are already prepared for cooking are _D_ in grocery stores.

A ready B approachable C probable D available

convenience foods 方便食品；instant coffee/noodle 速容咖啡/速食面。

ready adj. 准备好的；approachable adj. 可接近的，平易近人的，亲切的。

probable adj. 可能的；available adj. 可获得的，可利用的，可支配的。

44. When I caught him _A_ I stopped buying things there and started dealing with another shop.

A cheating B cheat C to cheat D to be cheating

45.It is important thatenough money _A_ to fund the project.

A be collected B must be collected C was collected D can be collected

46. Some old people don't like pop songs because they can't _C_ so much noise.

A resist B sustain C tolerate D undergo

tolerate vt. 忍受，容忍；undergo vt. 经历，遭受。

48. _C_ one time, Manchester was the home of the most productive cotton mills in the world. [at one time 曾经，一度]

A On B By C At D Of

49. _A_ it or not, his discovery has created a stir in scientific circles.

A Believe B To believe C Believing D Believed

believe it or not 信不信由你。creat a stir 引起轰动。

50. Mr. Morgan can be very sad _C_, though in public he is extremely cheerful.

A by himself B in person C in private D as individual