1. The settlers were unprepared for the long and patient toil ____ the soil would be made to yield crops.

[A] by which alone [B] so that [C] because [D] though

2. Most electronic devices of this kind, ____manufactured for such purposes, are tightly packed.

[A] that are [B] as are [C] which is [D] it is

3. The commentator must know the value of silence and how to use it at those moments ____ the pictures speak for themselves.

[A] if [B] when [C] which [D] as

4. Children are likely to have less supervision at home ____ was common in the traditional family structure.

[A] than [B] that [C] which [D] as

5. The Social Security Retirement Program is made up of two trust funds, ____ could go penniless by next year.

[A] the larger one [B] the larger of which

[C] the largest one [D] the largest of which

6. Living in the central Australian desert has its problems, ____ obtaining water is not the least.

[A] of which [B] for what [C] as [D] whose

7. There ought to be less anxiety over the perceived risk of getting cancer than ____ in the public mind today.

[A] exists [B] exist [C] existing [D] existed

8. The professor can hardly find sufficient grounds ____ his argument in favor of the new theory.

[A] which to base on [B] on which to base

[C] to base on which [D] which to be based on

9. ____ is generally accepted, economical growth is determined by the smooth development of production.

[A] What [B] That [C] It [D] As

10. No one would have time to read or listen to an account of everything ____ going on in the world.

[A] it is [B] as is [C] there is [D] what is

11. I’ve kept up a friendship with a girl whom I was at school ____ twenty years ago.

[A] about [B] since [C] till [D] with

12. He studied hard at school when he was young, ____ contributes to his success in later life.

[A] which [B] therefore [C] who [D] so that

13. The minister was the person ____.

[A] in whose honor the state dinner was given [B] whom the state dinner was given in honor

[C] for him the state dinner was given honor [D] whose honor the state dinner was given

14. This is an exciting area of study, and one ____ which new applications are being discovered almost daily.

[A] from [B] by [C] in [D] through

15. ____ can be seen from the comparison of these figures, the principle involves the active participation of the patient in the modification of his condition.

[A] As [B] What [C] That [D] It

16. He had more dictionaries than ____ for his work.

[A] they are needed [B] were necessary

[C] it was needed [D] necessary were they

17. These proposals sought to place greater restrictions on the use and copying of digital information than ____ in traditional media.

[A] exist [B] exists [C] existing [D] to exist

18. When the work is well done, a climate of accident-free operations is established ____ time lost due to injuries is kept at a minimum.

[A] where [B] how [C] what [D] unless

19. ____ Edward Blotkowsk, director of community service at Bentley College in Massachusetts, puts it, “There has to be coordination of programs. What’s need is a package deal.”

[A] So [B] Since [C] As [D] Thus

20. The Great Wall is the place ____ almost all tourists would like to visit when they come to Beijing.

[A] where [B] which [C] of which [D] in which

21. In actual fact he is quite ignorant on the subject. ____ he knows about it is out of date and inaccurate.

[A] What little [B] So much [C] How much [D] So little

22. Prof. Lee’s book will show you ____ can be used in other contexts.

[A] that you have observed [B] that how you have observed

[C] how that you have observed [D] how what you have observed

23. I will give this dictionary to ____ wants to have it.

[A] whomever [B] someone [C] whoever [D] anyone

24. They lost their way in the forest, and ____ made matters worse was that night began to fall.

[A] that [B] it [C] what [D] which

25. Although ____ happened in that developed country sounds like science fiction, it could occur elsewhere in the world.

[A] which [B] what [C] how [D] it

26. ____ is no reason for discharging her.

[A] Because she was a few minutes late [B] Owing to a few minutes being late

[C] The fact that she was a few minutes late [D] Being a few minutes late

27. Concerns were raised ____ witnesses might be encouraged to exaggerate their stories in court to ensure guilty verdicts.

[A] what [B] when [C] which [D] that

28. ____our team seems to lack at the moment is the determination ____ it will win.

[A] Whatever; that [B] What; that

[C] That; whether [D] Whether; that

29. It’s doubtful ____ the government of that country can accept them as permanent residents.

[A] whether [B] that [C] how [D] what

30. You may rely on ____ everything will be ready by Monday.

[A] that [B] what [C] which [D] it that

31. Conversation becomes weaker in a society that spends so much time listening and being talked to ____ it has all but lost the will and the skill to speak for itself.

[A] as [B] which [C] that [D] what

32. Give me your telephone number ____ I need your help.

[A] whether [B] unless [C] so that [D] in case

33. ____ born in Chicago, the author is most famous for his stories about New York city.

[A] Although [B] Since [C] As [D] When

34. All these conditions tend to increase the probability of a child committing a criminal act, ____ a direct causal relationship has not yet been establishment.

[A] provided [B] since [C] although [D] supposing

35. We are extremely sensitive to smells, ____ we do not generally realize it.

[A] even if [B] if only [C] only if [D] as if

36. Hydrogen is the fundamental element of the universe ____ it provides the building blocks from which the other elements are produced.

[A] so that [B] but that [C] in that [D] provided that

37. The senior librarian at the circulation desk promised to get the book for me ____ she could remember who last borrowed it.

[A] ever since [B] much as [C] even though [D] if only

38. ____industrial giants like General Motors and IBM struggle to survive by reducing the number of employees, Manpower is booming.

[A] For [B] Because [C] As [D] Since

39. ____ its economy continues to recover, the US is increasingly becoming a nation of part timers and temporary workers.

[A] Even though [B] Now that [C] If only [D] Provided that

40. Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.

[A] before [B] as [C] since [D] when

41. There are over 100 night schools in the city, making it possible for a professional to be re-educated no matter ____ he does.

[A] how [B] where [C] what [D] when

42. You can arrive in Beijing earlier for the meeting ____ you don’t mind taking the night train.

[A] provided [B] unless [C] though [D] until

43. The engineers are going through with their highway project, ____ the expenses have risen.

[A] even though [B] just because [C] now that [D] as though

44. It is ____ that we’ll have to be very careful.

[A] a so big work [B] a so big job [C] such a big job [D] such a big work

45. ____ it is you’ve found, you must give it back to the person it belongs to.

[A] That [B] Because [C] Whatever [D] However

46. She can hardly avoid making mistakes in her homework ____ hard she tries.

[A] for [B] as [C] how [D] however

47. ____ we have finished the course, we shall start doing more revision work.

[A] For now [B] Since that [C] Now that [D] By now

48. ____the figure may vary, analysts do agree on another matter.

[A] Now that [B] Although [C] Provided [D] Except that

49. On a raining day I was driving north through Vermont ____ I noticed a young man holding up a sign reading “Boston”.

[A] which [B] where [C] when [D] that

50. The draft bill will strictly control the amount of publicity that can be given to a case ____ a trial begins.

[A] since [B] if [C] before [D] as

51. ____they are adjusting to their new bodies and a whole host of new intellectual and emotional challenges, teenagers are especially self-conscious.

[A] If [B] Although [C] Whereas [D] Because

52. A variety of activities should be organized ____ participants can remain active as long as they want.

[A] if only [B] now that [C] so that [D] even if

53. The phenomenon provides a way for companies to remain globally competitive ____ avoiding market cycles.

[A] but [B] while [C] and [D] whereas

54. ____ will Bill be able to impress his boss.

[A] With hard work [B] By hard work

[C] Only with hard work [D] Through hard work

55.Only when you have acquired a good knowledge of grammar ____ write correctly.

[A] you will [B] you can [C] can you [D] can’t you

56.Humble ____ it may be, there’s no place like home, where he may go.

[A] although [B] as [C] how [D] which

57. There is a real possibility that these animals could be frightened, ____ a sudden loud noise.

[A] being there [B] should there be

[C] there was [D] there having been

58. The business of each day, ____ sellin goods or shipping them, went quite smoothly.

[A] it being [B] be it [C] was it [D] it was

59. The millions of calculations involved, had they been done by hand, ____ all practical value by the time they were finished.

[A] could lose [B] would have lost

[C] might lose [D] ought to have lost

60. Just as the soil is a part of the earth, ____ the atmosphere.

[A] as it is [B] the same as [C] so is [D] and so is

61. ____ do we go for picnic.

[A] Certainly [B] Sometimes [C] Seldom [D] Once

62. Vitamins do not provide energy, ____ do they construct or build any part of the body.

[A] either [B] so [C] nor [D] never

63. ____ for the timely investment from the general public, our company would not be so thriving as it is.

[A] Had it not been [B] Were it not

[C] Be it not [D] Should it not be

64. Only when you have obtained sufficient data ____ come to a sound conclusion.

[A] can you [B] would you [C] you will [D] you can

65.Wood does not conduct electricity; ____.

[A] so doesn’t rubber [B] also doesn’t rubber

[C] nor does rubber [D] nor rubber does

66. So involved with their computers ____ that leaders at summer computer camps often have to force them to break for sports and games.

[A] became the children [B] become the children

[C] had the children become [D] do the children become

67.Church, as we use the word, refers to all religious institutions, ____ they Christian, Islamic, Buddhist, Jewish, and so on.

[A] be [B] being [C] were [D] are

68.“____ during the performance of this trick, ladies and gentleman, do my hands actually leave my arms.” said the magician.

[A] On time [B] In no time [C] At no time [D] At times

69. ____, I still enjoy driving even after my accident.

[A] It may seem strange though [B] Strange though it may seem

[C] Though strange it may seem [D] Strange it may seem though

70. In vain ____ to discover what had happened before they got there.

[A] did they try [B] they tried [C] tried they [D] they had tried

71. So fast ____ that it is difficult for us to imagine its speed.

[A] light travels [B] travels light

[C] does light travel [D] do light travel

72.Not until ____ himself seriously ill.

[A] did he complete the task he had found [B] had he completed the task did he find

[C] he completed the task had he found [D] he had completed the task did he find

73. Little ____ his speech had made so deep an impression on his audience.

[A] did we think [B] we think [C] we did think [D] we thought

1. 正确答案为A项。空格之后是定语从句，修饰名词toil，从句前的介词by表示“依靠，凭借”。句子译文：“移民者对从事漫长而艰辛的劳作毫无准备，只有依靠这一点，土地才可以出产粮食。”

2. 正确答案为B项。定语从句修饰most electronic devices，所以从句中的动词应该是复数，that不能引导非限定性定语从句，所以选择as are。句子译文：“大多数为这些目的而生产的这种电子设备，包装得都很牢固。”

3. 正确答案为B项。由when引导的定语从句修饰moments。句子译文：“播音员必须懂得沉默的价值，懂得当画面不需要解说的时刻如何利用沉默。”

4. 正确答案为A项。本题考查由than引导的定语从句。被修饰的名词前出现less，其后应该有than与之对应，构成比较句型，同时，than又起到引导定语从句的作用。句子译文：“现在的孩子在家里受到的监管有可能比较少，而在过去的传统家庭结构中则很普遍。”

5. 正确答案为B项。which引导定语从句修饰two trust funds，两个中做比较应该使用比较级，所以选择the larger of which。句子译文：“社会保障退休计划由两笔信托资金组成，其中较大的一笔可能到明年就全部用光了。”

6. 正确答案为A项。obtaining water是problems之一，所以在定语从句引导词之前应该有一个表示范围的介词，介词of可以表示范围，所以选择of which。句子译文：“生活在澳大利亚中部沙漠有诸多困难，其中获取水源是一大难题。”

7. 正确答案为A项。由than引导的定语从句修饰anxiety，所以从句中的谓语动词应该使用单数。句子译文：“对觉察到的得癌症的危险的担心应该比公众心中的担心要少。”

8. 正确答案为B项。本题考查定语从句的省略表达，如果补充完整，应为on which he bases。句子译文：“教授几乎找不到充分的根据支持自己的观点来赞同这项新理论。”

9. 正确答案为D项。as引导的定语从句修饰从句后的主句。句子译文：“经济增长由生产的顺利发展决定，这一点得到普遍承认。”

10. 正确答案为C项。定语从句修饰everything，引导词被省略，从句是存在句型。句子译文：“没有谁会有时间去阅读或者收听对世界上正在发生的每件事情的描述。”

11. 正确答案为D项。本题考查定语从句中的介词。定语从句修饰girl，短语at school with sb. 表示“和某人是同窗”。句子译文：“我和20年前同窗的一位女孩一直保持着朋友关系。”

12. 正确答案为A项。which引导的定语从句修饰主句。句子译文：“他年轻时在学校里学习努力，这对他后来的成功起到了促进作用。”

13. 正确答案为A项。本题考查两点：其一，whose引导定语从句，表示“某人的”;其二，考查短语in honor of，表示“招待，为了向……表示敬意”。句子译文：“这位部长就是为其举行这次国宴的那个人。”

14. 正确答案为C项。应选择介词in，表示“在某个领域”。句子译文：“这是一个令人兴奋的研究领域，一个几乎每天都有新的应用被发现的研究领域。”

15. 正确答案为A项。只有as可以引导位于主句之前的定语从句，修饰后面的主句。句子译文：“通过对比这些数字可以看出，这个原则需要患者积极参与自己病情的改善。”

16. 正确答案为B项。than是定语从句引导词，在从句中作主语，因此从句无需再加主语。句子译文：“他的词典多得超出了工作需要的范围。”

17. 正确答案为A项。由than引导的定语从句修饰restrictions，因此从句中的谓语动词应该是复数形式。句子译文：“这些建议试图对使用和拷贝数字信息施加比对传统媒体更大的限制。”

18. 正确答案为A项。由where引导的定语从句修饰climate，where相当于in which。句子译文：“工作做好后，一种无事故操作的环境就被建立起来，在这种环境下，由于伤害造成的时间损失被保持在最低水平。”

19. 正确答案为C项。由as引导的定语从句修饰后面的主句。句子译文：“正如马萨诸塞州本特利学院社区服务系主任布洛特考斯克所说，‘各项目之间必须要有协调。所需要的是一揽子政策。’”

20. 正确答案为B项。引导词在从句中作动词visit的宾语。注意不要选择where，因为where相当于in which，作状语。句子译文：“长城是几乎所有来北京的游客都要去参观的地方。”

21. 正确答案为A项。本题考查有what引导的主语从句，引导词what在从句中作动词词组know about的宾语，little对what起修饰作用。句子译文：“实际上他对这个专业所知寥寥。他所了解的那一点点已经过时，而且也不准确。”

22. 正确答案为D项。本题的考点涉及两种语言现象。其一，由how引导宾语从句，作动词show的宾语;其二，由what引导主语从句，作can be used in other contexts部分的主语。句子译文：“李教授将告诉你如何把你所观察到的东西用于其他情况。”

23. 正确答案为C项。由whoever引导宾语从句，作介词to的宾语。需要注意的是，不能选择whomever，因为引导词在从句中作主语。句子译文：“无论谁想要这本词典，我就给谁。”

24. 正确答案为C项。本题考查由what引导主语从句，what表示“事情，情况”。句子译文：“他们在森林里迷了路，更糟糕的是夜幕开始降临。”

25. 正确答案为B项。本题同样考查what引导主语从句。句子译文：“尽管在那个发达国家所发生的事情听起来像科幻小说，但是这种事情可以发生在世界的任何其他地方。”

26. 正确答案为C项。本题考查that引导同位语从句。A项中的because只能引导状语从句，而不能引导主语从句;B项中的短语介词owing to同样不能引导主语从句;D项语法正确，动名词可以作主语，但是语义不完整，可改为Her being a few minutes late。句子译文：“她迟到几分钟，这个情况不能成为开除她的理由。”

27. 正确答案为D项。题干的主句是Concerns were raised，其后是一个同位语从句，修饰名词concerns，空白处缺引导词，从句内容完整，不需要意义的补充，所以应由that引导。句子译文：“有人表示担心，证人可能会受到鼓励，为了确保有罪的裁定而在法庭上夸大其词。”

28. 正确答案为B项。本题考查两种从句：由what引导主语从句;由that引导同位语，作名词determination的同位语。句子译文：“目前我们队似乎缺乏的东西是取胜的决心。”

29. 正确答案为A项。本题考查whether引导主语从句，表示“是否”。句子译文：“该国政府是否会接受他们为永久性居民，还不能确定。”

30. 正确答案为D项。本题考查that引导宾语从句，作介词的宾语，但是不能直接置于介词之后，应该添加it作形式宾语。句子译文：“到周一为止，一切都会准备妥当，你可以放心。”

31. 正确答案为C项。本题考查引导结果状语从句的so…that。句子译文：“在一个花大量时间倾听别人说话，以至于自己几乎已经丧失了表达自己观点的意愿和技能的社会中，谈话能力变得很弱。”

32. 正确答案为D项。连词whether表示“是否”;unless表示“除非，如果不”;so that，表示“为了”、“以至于”;in case表示“以防”。题干的后半部分表示前半部分的反向目的，所以应选择in case。句子译文：“告诉我你的电话号码，以防我需要你的帮助。”

33. 正确答案为A项。连词although表示“虽然”、“尽管”;since表示“既然”、“自从”;as表示“因为”、“当……时候”;when表示“当……时候”。题干的前后部分是让步关系，所以应选择although。句子译文：“虽然出生在芝加哥，但是这位作家以写纽约题材的小说最为出名。”

34. 正确答案为C项。连词provided表示“以……为条件”、“如果”;since表示“既然”、“自从”;although表示“虽然”、“尽管”;supposing表示“如果”、“假如”。题干的前后部分是让步关系，所以应选择although。句子译文：“所有这些条件往往会增加孩子犯罪的可能性，尽管还没有确定直接的因果关系。”

35. 正确答案为A项。连词even if表示“尽管”、“即使”;if only表示“要是”(通常跟虚拟语气)、“只要”;only if表示“只要”;as if表示“好像”。题干的前后部分是让步关系，所以选择even if。句子译文：“我们对气味极为敏感，尽管我们通常意识不到。”

36. 正确答案为C项。连词so that表示“为了”、“以至于”;but that表示“(不是……)而是”;in that表示“因为”;provided that表示“以……为条件”、“如果”。题干的前后部分是因果关系，所以应选择in that。句子译文：“氢是宇宙中最基本的元素，因为它为其他元素的产生提供材料。”

37. 正确答案为D项。连词ever since表示“自从”;much as表示“尽管”;even though表示“即使”;if only表示“要是”(通常跟虚拟语气)、“只要”。句子译文：“图书出纳台的那位年长的图书馆人员承诺，只要她能够想起是谁最后一次借走这本书的，她就会给我找到这本书。”

38. 正确答案为C项。连词for和because都表示“因为”;但是前者的语气比后者弱;as既可以表示“因为”，也可以表示“当……时候”;since表示“因为”或者“自从”。题干的前半部分表示后半部分的时间，所以应选择as。句子译文：“正当通用和IBM这样的实业巨头通过减少雇员人数求得生存之时，Manpower却在繁荣发展。”

39. 正确答案为A项。连词even though表示“尽管”、“即使”;now that表示“既然”;if only表示“要是”、“只要”;provided that表示“以……为条件”、“如果”。题干的前后部分是让 步关系，所以应选择even though。句子译文：“尽管经济继续复苏，但是美国的兼职人员和临时工却越来越多。”

40. 正确答案为D项。when it comes to…是固定表达，意思是“当谈到……”、“当涉及到……”。句子译文：“做作业是提高考试成绩的一个有把握的途径，特别是在课堂测试中尤其如此。”

41. 正确答案为C项。从句中的动词does缺宾语，how，where和when都是副词，不能做动词的宾语，所以只能选择what。句子译文：“这个城市有100多所夜校，这使得职业人员可以重新接受教育，不管从事的是什么工作。”

42. 正确答案为A项。连词provided表示“以……为条件”、“如果”;unless表示“除非”、“如果不”;though表示“虽然”、“尽管”;until表示“直到”。题干的后半部分是前半部分的条件，所以应选择provided。句子译文：“如果你不介意坐夜间的火车，你可以早点到北京参加会议。”

43. 正确答案为A项。连词even though表示“尽管”、“即使”;just because表示“仅仅因为”;now that表示“既然”;as though表示“好像”。题干前后部分是让步关系，所以应选择even though，句子译文：“工程师们正在完成他们的公路项目，尽管费用已经上升。”

44. 正确答案为C项。本句的基本句型是“如此……以至于”。work是不可数名词，不能和冠词a连用，所以只能选择such a big job。另外的正确说法应是such big work。句子译文：“这项工作很重要，我们必须非常谨慎。”

45. 正确答案为C项。句子的前后部分是让步关系，而且从句中的动词found缺宾语，所以应选择whatever，表示“不管是什么”。句子译文：“不管你发现的是什么，你都必须归还物品的主人。”

46. 正确答案为D项。句子的前后部分是让步关系，所以应选择however，表示“无论如何”。句子译文：“无论她如何努力，她都几乎无法避免做作业出错。”

47. 正确答案为C项。短语for now和by now不是连词，分别表示 “眼下”、“暂时”和“到目前为止”;连词since应去掉that，表示“既然”;连词now that表示“既然”。题干前后部分是因果关系，可以由since或now that引导从句，但是since后面不能有that，所以应选择now that。句子译文：“既然我们已经学完了这门课程，我们将开始做更多的复习。”

48. 正确答案为B项。连词now that表示“既然”;although表示“尽管”;provided表示“以……为条件”、“如果”;except that表示“只是”、“但是”。题干前后部分是让步关系，所以应选择Although。句子译文：“尽管数字不同，但分析家在另一个问题上意见一致。”

49. 正确答案为C项。本题考查sb. was doing sth. When…句型，表示“某人正在做某事，这时……”。句子译文：“在一个雨天，我正在佛蒙特州开车向北行驶，这时我注意到有个年轻人举着一个牌子，上面写着‘波士顿’。”

50. 正确答案为C项。四个词中有三个词可以作引导时间状语从句的连词，其中，since表示“自从”;before表示“在……之前”;as表示“当……时候”。if引导条件状语从句，表示“如果”。根据语境，选择before比较合理。句子译文：“这个草拟的法案将严格控制在审判开始之前对案件的宣传。”

51. 正确答案为D项。连词if表示“如果”;although表示“虽然”、“尽管”;whereas表示“但是”;because表示“因为”。题干前后部分是因果关系，所以应选择because。句子译文：“因为他们正在适应新的身体以及许多新的智力和情感挑战，所以青少年特别有自我意识。”

52. 正确答案为C项。连词if only表示“要是”(通常跟虚拟语气)、“只要”;now that表示“既然”;so that表示“为了”、“以至于”;even if表示“即使”。可以看出，题干中的从句表示主句的目的，所以应选择so that。句子译文：“应该组织各种各样的活动，以便于参与者能够尽可能长时间地保持活跃。”

53. 正确答案为B项。but表示“但是”;while表示“与……同时”;and表示“并且”、“而且”;whereas表示“然而”。只有while可以表示时间。句子译文：“该现象为各公司在避免市场周期的同时保持国际竞争力提供了一个途径。”

54正确答案为C项。本题考查“当only+状语置于句首时，主句须构成倒装”这项规则。选项中只有第三项可以使句子构成部分倒装。句子译文：“只有通过努力工作比尔才能给老板留下深刻印象。”

55 正确答案为C项。本题所考查的规则同上题。C、D两项是倒装语序，但是D项是否定意义，与原文语义不符。句子译文：“只有当你掌握了充分的语法知识才能正确地写作。”

56 正确答案为B项。本题考查as引导的让步状语从句的倒装形式。规则为：从句结尾的词置于句首。句子译文：“尽管家很简陋，但无论他走到哪里，也找不到像家这样的地方。”

57 正确答案为B项。本题考查虚拟倒装现象。题干是针对未来的虚拟表达，当从句省略连词if的时候，应构成部分倒装。本题应将should提前至句首。句子译文：“如果突然出现大的噪音，这些动物很可能会受到惊吓。”

58 正确答案为B项。本题考查让步状语从句的倒装形式。当whether引导的让步状语从句省略whether，从句中的系动词应变为原形，置于句首。句子译文：“每天的生意，不管是售货还是运货，都进行得很顺利。”

59 正确答案为B项。本题考查虚拟倒装。在虚拟表达中，当省略连词if时，从句须构成部分倒装。本句是针对过去情况的虚拟，从句倒装形式已经给出，主句动词的形式应该是would+现在完成时。句子译文：“所涉及到的数百万次计算，假如手工进行，等到完成的时候就失去了一切实际价值了。”

60 正确答案为C项。本题考查as…so句型。该句型的主句，即so后面的部分可以构成部分倒装。句子译文：“正如土壤是地球的一部分，大气也是地球的一部分。”

61. 正确答案为C项。题干是倒装语序，只有C项可以使主句构成倒装，因为它是表示否定意义的状语。句子译文：“我们很少去野餐。”

62 正确答案为C项。前一个分句表达否定意义，后一个分句应该使用nor或neither开头，表达“也不”。句子译文：“维生素不提供能量，也不构建身体的任何部位。”

63正确答案为A项。题干表达的是错综时间虚拟：从句针对过去，主句针对现在。当连词if被省略时，从句须构成部分倒装。句子译文：“要不是来自广大公众的及时投资，我们的公司就不会像现在这样兴旺了。”

64 正确答案为A项。本句以only+时间状语从句开头，主句应构成部分倒装。句子译文：“只有当你获得充分的数据之后，才能得出正确的结论。”

65正确答案为C项。前一个分句表达否定意义，后一个分句应该使用nor或neither开头，并构成部分倒装，表达“也不”。句子译文：“木材不导电，橡胶也不导电。”

66. 正确答案为D项。本题考查so…that的倒装形式。当so提前至句首时，主句应构成部分倒装。从主句来看，句子表达现在时的概念。A和C两项使用的都是过去时态，B项使用的是完全倒装形式。句子译文：“孩子们对电脑爱不释手，电脑夏令营的领导常常不得不强迫他们去参加运动和游戏。”

67 正确答案为A项。本题考查让步状语从句的倒装。由whether引导的让步状语从句，当whether被省略时，从句中的系动词应该变为原形，并且提前至句首。句子译文：“当我们使用教堂这个词时，指的是所有的宗教建筑，无论是基督教、伊斯兰教、佛教，还是犹太教，等等。”

68. 正确答案为C项。短语on time表示“按时”;in no time表示“立刻，马上”;at no time表示 “在任何时候都不，从来没有”;at times表示“有时”。题干是倒装语序，只有at no time可以使句子构成倒装，因为它表达否定意义。句子译文：“‘女士们，先生们，在我表演这个魔术的过程中，我的双手从来没有脱离过胳膊。’这位魔术师说。”

69. 正确答案为B项。本题考查连词though所引导的让步状语从句的倒装形式，即把从句结尾的词提前至句首。在本句中，正确表达应为Strange though it may seem，正常语序应为though it may seem strange。句子译文：“虽然似乎很奇怪，可是在出了事故之后我仍然喜欢开车。”

70 正确答案为A项。短语in vain表示“徒劳地”，是否定意义的状语，句子以该短语开头，应构成部分倒装。句子译文：“他们设法调查在他们到那儿之前发生了什么，但是没有成功。”

71 正确答案为C项。本题考查so…that句型的倒装形式。当so…置于句首时，主句构成部分倒装。C、D两项是部分倒装的形式，但是D项中do的形式不对。句子译文：“光的传播速度非常快，我们很难想象。”

72. 正确答案为D项。本题考查“当否定意义的状语置于句首时，主句谓语动词须构成倒装”这项规则。C、D两项符合这项规则。根据语境，从句动作发生在主句动作之前，所以主句应使用一般过去时，从句应使用过去完成时。故此排除C项。句子译文：“直到他完成这项任务才发现自己病得很严重。”

73正确答案为A项。little是表示否定意义的状语。按照语法要求，主句的谓语动词须构成部分倒装。句子译文：“我们几乎没有想到他的演讲给观众留下了如此深刻的印象。”