1. Luckily, we’d brought a road map without ________ we would have lost our way.
A. it B. that C. this D. which
2. When he was working there he caught a serious illness from ________ efforts he still suffers.
A. which B. that C. whose D. what
3. It’s said that he’s looking for a new job, one ________ he can get more money to support his family.
A. when B. where C. that D. which
4. I can think of many cases ________ students obviously knew a lot of English words and expressions but couldn’t write a good essay.
A. why B. which C. as D. where
5. He’s got himself into a dangerous situation ________ he is likely to lose control over the plane.
A. where B. which C. while D. why
6. He made another wonderful discovery, ________ of great importance to science.
A. which I think is B. which I think it is C. which I think it D. I think is
7. He likes living alone, and says that he wants to go and live in a place ________ nobody knows.
A. where B. that C. when D. what
8. Next summer, ________ you will spend in
A. that B. which C. when D. in which
9. He was educated at the local high school, ________ he went on to
A. after which B. after that C. in which D. in that
10. After graduation she reached a point in her career ________ she had to decide what to do.
A. that B. what C. which D. where
11. Mark was a student at this university from 1999 to 2003, ________he studied very hard and was made Chairman of the Students’ Union.
A. during which time B. for which time C. during whose time D. by that time
12. Jim passed the driving test, ________surprised everybody in the office.
A. which B. this C. that D. it
13. Shirley said that she would have a two-week holiday in July, ________, I think, is impossible.
A. it B. that C. when D. which
14. That passenger was very impolite to the conductor, ________, of course, made things even worse.
A. who B. whom C. what D. which
15. The science of medicine, ________ progress has been made very rapid lately, is perhaps
the most important of all the science.
A. in which B. of which C. to which D. which
16. There are many Nobel Prize winners in the world, ________ are westerners.
A. the majority of them B. the majority of whom
C. the majority of which D. of whom the majority
17.
A. those B. them C. which D. islands
18. Tom said he had been studying in the reading room for 40 minutes, ________, of course, is not true.
A. he B. this C. who D. which
19. Today, we’ll discuss a number of cases ________ beginners of English fail to use the language properly.
A. which B. as C. why D. where
20. The largest collection ever found in
A. which B. that C. them D. it
答案解析：
1. D。which 指 the road map。
2. C。from whose efforts he still suffers 为修饰 a serious illness 的定语从句，whose 在定语从句中用作定语，修饰 efforts。
3. B。where 引导定语从句修饰 one。注：one 在此指 a new job。类似地，下面一题的答案是C，因为one that 相当于 a problem that：The problem is ________ has caused us a lot of trouble. A. one B. that C. one that D. that one
4. D。先行词是 many cases，关系副词 where =in which。
5. A。where 所引导的为修饰 a dangerous situation 的定语从句。
6. A。选项中的 I think 是插入语，若略去不看便可清楚地看出答案。
7. B。在表地点的名词后通常用 where 引导定语从句，但在这里只能用that，因为a place 在此用作动词know的宾语，而不修饰它的状语。
8. B。定语从句中的 spend 缺少宾语，排除 C 和 D；引导非限制性定语从句不能用 that。
9. A。after which中的which指“他在当地一所高中接受教育”，after which的意思就是“在当地一所高中接受完教育之后（即高中毕业之后）”。
10. D。where在此引导定语从句，修饰先行词point（不是career），又如：We have reached a point where a change is needed. 我们到了必须改一改的地步。
11. A。前后都是句子，之间无连词，后句应为非限制性定语从句，排除选项D；“他学习努力并被选为学生会主席”应是“从1999至2003年这个期间里”所发生的事，所以用during which time。
12. A。前后是两个句子，之间又无连词，要选可引导从句的连词，选项中只有which，它引导一个非限制性定语从句，代表前一句内容并在从句中作主语。
13. D。I think 是插入语，去掉后，可以看出后面部分是个非限制性定语从句，故用which引导。
14. D。此题考查which引导的非限制性定语从句。该题先行词是That passenger was very impolite to the conductor整个句子所表达的内容，逗号之后部分为定语从句。of course 在句子中作插入语，which在定语从句中作主语，故选D。
15. A。progress的取得是在the science of medicine中的，故用in which引导定语从句。
16. B。句中非限制性定语从句的先行词是Nobel Prize winners，不是the world。
17. C。the largest of which is Taiwan 为非限制性定语从句。
18. D。从句子结构来看，空缺处后是一个非限制性定语从句，of course 是插入语，空缺处要填入的是能代替前面整个主句内容的关系代词，答案非 D 莫属。
19. D。where在此引导定语从句，修饰先行词cases，where的意思相当于in which。类例：There are cases where the word “mighty” is used as an adverb. 在一些情况下，mighty一词可用作副词。
20. A。句中逗号后面是一个非限制性定语从句，故答案为A。