1. ____ is well known, the key to success lies in hard work.

　　A. As B. That C. Which D. What

　　【答案】A.本題考查的是固定搭配as is well known，眾所周知的意思。

　　2. The size of the audience, ___ we had expected was well over one thousand.

　　A. whom B. who C. as D. that

　　【答案】C as 引導(dǎo)一個(gè)定語從句，as代表整個(gè)主句的內(nèi)容，一位“如我們所期望的，觀眾的數(shù)量超過了一千”，這里audience“觀眾”作不可數(shù)名詞，用size來修飾。

　　3. ____ was pointed above, this substance can be used as a substitute.

　　A. It B. That C. What D. As

　　【答案】D as這里引導(dǎo)非限定性定語從句，as在定語從句中做主語，代替逗號(hào)后面整個(gè)主句，意為：正如。句意為：正如上面所指出的，從這種物質(zhì)可以被用作替代品。如果選A或B項(xiàng)就會(huì)成為一個(gè)獨(dú)立的句子，和后面的句子之間就會(huì)缺乏連接詞;如果選C項(xiàng)，則應(yīng)該說，what was pointed above is what this substance can be used as a substitute.

　　4. _____ is often the case, we have worked out the production plan.

　　A. Which B. When C. What D. As

　　【答案】D As引導(dǎo)的特殊定語從句。固定詞組：as is often the case(像往常一樣)。

　　5. ________ is reported in the newspapers, talks between the two countries are making progress.

　　A. It B. As C. That D. What

　　【答案】B as is reported,正如被報(bào)道的那樣。

　　6. It turned out that the man was an excellent policeman working in New York, _____ had contributed a lot to the case.

　　A. that B. which C. who D. where

　　【答案】C此題考查的是非限定性定語從句，表示對前面句子的補(bǔ)充說明。Who指代前面的policeman, 這句話的意思為：原來那人是在紐約工作的優(yōu)秀警察，他為這個(gè)案子貢獻(xiàn)很多。

　　7. He is a man of great experience, __________ much can be learned.

　　A. who B. that C. from which D. from whom

　　【答案】D learn from 向……學(xué)習(xí)

　　8. I, __________ your good friend, will try my best to help you out.

　　A. who is B. who am C. that is D. what is

　　【答案】B 從句少主語 先行詞是人、

　　9. An old friend from abroad, ___ I was expecting to stay with, telephoned me from the airport.

　　A. that B. whom C. who D. which

　　【答案】B。whom，關(guān)系代詞，在定語從句中做with 的賓語，指人。

　　10. You're the only person ______I've ever met ______could do it.

　　A. who; / B. /; whom C. whom; / D. /; who

　　【答案】D 先行詞有only修飾 that或省略。第二個(gè)空從句少主語，連接詞不能省。

　　11. There was a teapot fashioned like a China duck, out of _____ open mouth the tea was supposed to come.

　　A. which B. its C. that D. whose

　　【答案】D句意為：有一只茶壺設(shè)計(jì)得相一只中國的鴨子，茶水從它張開的嘴處倒出。本題考察定語從句，先行詞為teapot,在后面的非限定性定語從句中作open mouth(開口的嘴兒)得定語，故用whose.

　　12. The experiment, ___ will soon be announced, was done by my colleagues.

　　A. whose results B. the results on which

　　C. at which the results D. of whose results

　　【答案】A。此句為定語從句。關(guān)系代詞whose在從句中做results的定語。whose是代詞的所有格，它既可以代人也可以代物。當(dāng)代物時(shí)，它相當(dāng)于…of which。Please show me the book whose cover is red. =Please show me the book the cover of which is red.請把封面是紅色的那本書給我看看。

　　13. George Orwell, ________ was Eric Arthur, wrote many political novels and essays.

　　A. the real name B. what his real name

　　C. his real name D. whose real name

　　【答案】D 他的真實(shí)姓名。Whose

　　14. Mr. Zhou, ______ native language was Chinese, could read and write several foreign languages.

　　A. whose　　　 B. his　　　 C. which　　　 D. that

　　【答案】A 他的母語是中文。Whose

　　15. That tree, __________ branches are almost bare, is very old.

　　A. whose B. of which C. in which D. on which

　　【答案】A 他的樹枝。

　　16. He has made another wonderful discovery, ____ of great importance to science.

　　A. who I think it is B. of that I think it is C. I think whom is D. which I think is

　　【答案】D which代指前面的discovery。

　　17. His brother had become a teacher, ___ he wanted to be.

　　A. who B. what C. which D. that

　　【答案】C。本題考查的是which引導(dǎo)的定語從句。先行詞a teacher，在從句中作he wanted to be的賓語。因此選C。他的兄弟成為了一名教師，那正是他想成為的。

　　18. The university _____my father teaches is a world-famous one, _____was set up 50 years ago.

　　A, where; which B. which; which C. /; where D. where; that

　　【答案】A 第一個(gè)空where=in which 第二個(gè)空 which代指university，從句缺主語。

　　19. This machine, ______for many years, is still working perfectly.

　　A. after which I have looked B. which I have looked after

　　C. that I have looked after D. I have looked after

　　【答案】B 非限制性定語從句少賓語，連接詞不省略。

　　20. Smoking, ____ is a bad habit, is, however, popular.

　　A. that B. which C. it D. though

　　【答案】B 非限制性定語從句 不用that。