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

　　0. 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 我不能來來的原因是我必須得為馬上來臨的考試做準備了。reason 原因，why 引導原因狀語從句。

　　2. D 年輕時她在學樣學習很用功，這對她在以后的職業(yè)生涯中取得成功有很大貢獻。這是非限制性定語從句，前面整個句子做先行詞，則定語從句只能用關系代詞which，故選D.

　　3. A 聲波在空氣中的傳播跟在水面的傳播方式是一樣的。As引導方式狀語從句。引導方式狀語從句的從屬連詞有：as， as if， as though， just as等。

　　4. D 我買了一瓶啤酒，但是我沒有什么東西用來打開它。句子“I can open it with”中缺少賓語，關系代詞前有介詞時：指人就用whom，指物就用which，故選擇：D.

　　5. C 作家們能準確地描述出他們曾見過的事物的特征。

　　6. B 這個禮物并不像他曾許諾我的那樣好。such……as…… 如此……像什么一樣;

　　7. A 或許這樣的日子就會來臨，人們在城市里能夠呼吸到新鮮空氣。When引導時間狀語從句。

　　8. A 為了組織一場客觀的測試，老師寫了一系列問題，每個問題只有一個正確的答案。each of which 這些問題中的每一個，非限制性定語從句中“which”這個關系代詞代指前面的“a series of questions”。形式也對，但句子謂語用的是has，是單數，故A正確。

　　9. B 更高的犯罪率存在于城市那些大量的無業(yè)游民中。分析：這個選項我們不要被空格前的in cities所迷惑了，否則一下就選用地點狀語引導詞where了，這樣句子就不正確了，因為關系副詞是不能做主語的，D排除;關系代詞在句子中可以作主語，C選項，我們代入句子看看，主語重復了， which 和they都是充當主語，并列這樣用，是根本生不通的。D選項謂語動詞不能用分詞形式，分詞本身詞性就是不動詞，怎么能充當謂語。答案為：B.

　　10. C 科學家們稱牛頓的引力存在整個宇宙空間的理論思想為萬有引力定律。“Call sth sth……” 意為：“稱……為……”;我們把句子簡化為：Scientists call Newton‘s idea the law of universal gravitation. 科學家們稱牛頓的思想為萬有引力定律;顯然，先行詞是idea， 而它充當的是賓語，用which或that來引導，在該類題中，如果既給出which又給出that供選擇時，應以選that為正確答案。