21. This washing machine is environmentally friendly because it uses _______ water and electricity than _______ models. (2006北京卷)
A. less; older B. less; elder C. fewer; older D. fewer; elder
【答案】A。
【考点】考查形容词辨析与用法。
【解析】由于water and electricity不可数，所以不能选C和D; 又因为elder只用于人，不用于事物，所以排除B。
22. ― When do we need to pay the balance?
― __________ September 30. (2006北京卷)
A. In B. By
C. During D. Within
【答案】B。
【考点】考查介词辨析与用法。
【解析】by指“在……之前”“到……为止”，又如：He was very tired by the evening. 他到晚上已经很累了。He has read about 40 pages of the book by now. 现在这本书他已读了大约40页。
23. She went to the bookstore and bought _______. (2006北京卷)
A. dozen books B. dozens books C. dozen of books D. dozens of books
【答案】D。
【考点】考查名词修饰语的用法。
【解析】dozens of为习语，其意为“许多”“好几
24. ― Which driver was to blame?
― Why, _______! It was the child’s fault, clear and simple. He suddenly came out between two parked cars. (2006北京卷)
A. both B. each C. either D. neither
【答案】D。
【考点】考查代词用法。
【解析】由于是小孩的错，所以两个司机都没有责任。
25. ― What’s the name?
― Khulaifi. _______ I spell that for you? (2006北京卷)
A. Shall B. Would C. Can D. Might
【答案】A。
【考点】考查情态动词用法。
【解析】Shall I…? 意为“要我……吗？”，又如：Shall I help you? 要不要我帮你的忙? Do you want a bath at once, or shall I have mine first? 你马上洗澡还是我先洗?
26. ― I knocked over my coffee cup. It went right over _______ keyboard.
― You shouldn’t put drinks near _______ computer. (2006北京卷)
A. the; 不填 B. the; a C. a; 不填 D. a; a
【答案】B。
【考点】考查冠词用法。
【解析】第一空为特指，即指被倒了咖啡的这个键盘，故用the; 第二空表泛指，指任何一台电脑，故用不定冠词。
27. ― _______ leave at the end of this month.
― I don’t think you should do that until _______ another job. (2006北京卷)
A. I’m going to; you’d found B. I’m going to; you’ve found
C. I’ll; you’ll find D. I’ll; you’d find
【答案】B。
【考点】考查动词时态。
【解析】第一空用be going to表示打算或意图，第二空用现在完成时暗示对方应该“先找到新工作，然后再辞职”。注：第二空若不用现在完成时，用一般现在时也可以。
28. There have been several new events _______ to the program for the 2008 Beijing Olympic Games. (2006北京卷)
A. add B. to add C. adding D. added
【答案】D(http://www.yygrammar.com/)。
【考点】考查非谓语动词用法。
【解析】由于add与其前的new events为被动关系，所以要用过去分词。
29. ― Could you do me a favour?
― It depends on _______ it is. (2006北京卷)
A. which B. whichever C. what D. whatever
【答案】C。
【考点】考查名词性从句用法。
【解析】what在此导宾语从句，what在宾语从句中用作表语，句意为：这要看是什么(即这要看你要我帮什么忙)。
30. ― Your job _______ open for your return.
― Thanks. (2006北京卷)
A. will be kept B. will keep C. had kept D. had been kept
【答案】A。
【考点】考查动词的被动语态。
【解析】根据句意(尤其是答语Thanks)可知，此处应用将来时，而不是过去完成时; 另外，工作应该是“被”保留，故用被动语态。
31. Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those _______ don’t. (2006北京卷)
A. who; 不填 B. 不填; who C. who; who D. 不填表; 不填
【答案】C。
【考点】考查定语从句。
【解析】两空均填who，引导定语从句。由于两个who在定语从句都是用作主语，所以不能省略。
32. ― Where did you put the car keys?
― Oh, I _______ I put them on the chair because the phone rang as I _______ in. (2006北京卷)
A. remembered; come B. remembered; was coming
C. remember; come D. remember; was coming
【答案】D。
【考点】考查动词时态。
【解析】第一空用一般现在时，指的是“现在”还记得; 第二空用过去进行时，指的是当时正在做的事。
33. _______ you have tried it, you can’t imagine how pleasant it is. (2006北京卷)
A. Unless B. Because C. Although D. When
【答案】A。
【考点】考查状语从句用法。
【解析】从语境上看，只有A填入空格意思最通顺。Unless的意思是“除非”，又如：Don’t come unless I telephone. 除非我给你打电话否则不要来。You will fail unless you work hard. 你会失败，除非你努力工作。
34. He found it increasingly difficult to read, _______ his eyesight was beginning to fail. (2006北京卷)
A. and B. for C. but D. or
【答案】B。
【考点】考查并列连词的用法。
【解析】for在此表原因。又如：We rarely stay in hotels, for we can’t afford it. 我们很少住旅馆，因为我们住不起。
35. I can’t stand _______ with Jane in the same office. She just refuses _______ talking while she works. (2006北京卷)
A. working; stopping B. to work; stopping
C. working; to stop D. to work; to stop
【答案】C(http://ask.yygrammar.com/)。
【考点】考查非谓语动词用法。
【解析】stand表示“容忍”时，其后习惯上接动名词作宾语; 而动词refuse后接动词时，则习惯上要接不定式。