1. The reason _____ I can‘t come is that I have to prepare for the coming exam.
A. for B. as
C. because D. why
2. She studied hard at school when she was young; _____ contributes to her success in her career.
A. that B. so that
C. so D. which
3. Sound waves travel in the air in much the same way _____ water waves spread on the water.
A. as B. that
C. where D. in which
4. I‘ve got a bottle of beer， but I haven’t got anything _____ I can open it with.
A. that B. what
C. where D. which
5. Writers can accurately describe objects ______ have never seen.
A. who B. if they C. they D. that
6. It wasn‘t such a good present _____ he had promised me.
A. that B. as
C. which D. what
7. Perhaps the day will come _____ people will be able to breathe clean air in cities.
A. when B. while
C. as D. since
8. To make up an objective test， the teacher writes a series of questions， _____ has only one correct answer.
A. each of which B. some of which
C. which D. what
9. A higher crime rate exists in cities _____ a large percentage of unemployment.
A. where have B. that have
C. which they have D. that having
10. Scientists call Newton‘s idea _____ gravitation reaches throughout the universe the law of universal gravitation.
A. when B. which
C. that D. where
1. D 我不能来来的原因是我必须得为马上来临的考试做准备了。reason 原因，why 引导原因状语从句。
2. D 年轻时她在学样学习很用功，这对她在以后的职业生涯中取得成功有很大贡献。这是非限制性定语从句，前面整个句子做先行词，则定语从句只能用关系代词which，故选D.
3. A 声波在空气中的传播跟在水面的传播方式是一样的。As引导方式状语从句。引导方式状语从句的从属连词有：as， as if， as though， just as等。
4. D 我买了一瓶啤酒，但是我没有什么东西用来打开它。句子“I can open it with”中缺少宾语，关系代词前有介词时：指人就用whom，指物就用which，故选择：D.
5. C 作家们能准确地描述出他们曾见过的事物的特征。
6. B 这个礼物并不像他曾许诺我的那样好。such……as…… 如此……像什么一样;
7. A 或许这样的日子就会来临，人们在城市里能够呼吸到新鲜空气。When引导时间状语从句。
8. A 为了组织一场客观的测试，老师写了一系列问题，每个问题只有一个正确的答案。each of which 这些问题中的每一个，非限制性定语从句中“which”这个关系代词代指前面的“a series of questions”。形式也对，但句子谓语用的是has，是单数，故A正确。
9. B 更高的犯罪率存在于城市那些大量的无业游民中。分析：这个选项我们不要被空格前的in cities所迷惑了，否则一下就选用地点状语引导词where了，这样句子就不正确了，因为关系副词是不能做主语的，D排除;关系代词在句子中可以作主语，C选项，我们代入句子看看，主语重复了， which 和they都是充当主语，并列这样用，是根本生不通的。D选项谓语动词不能用分词形式，分词本身词性就是不动词，怎么能充当谓语。答案为：B.
10. C 科学家们称牛顿的引力存在整个宇宙空间的理论思想为万有引力定律。“Call sth sth……” 意为：“称……为……”;我们把句子简化为：Scientists call Newton‘s idea the law of universal gravitation. 科学家们称牛顿的思想为万有引力定律;显然，先行词是idea， 而它充当的是宾语，用which或that来引导，在该类题中，如果既给出which又给出that供选择时，应以选that为正确答案。
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