29. ______ to reach them on the phone, we sent an email instead. (2008重庆卷)

A. Fail                   B. Failed               C. To fail                D. Having failed

【答案】D。

【考点】考查非谓语动词。

【解析】根据语境分析，“用电话联系”与“发电子邮件”两个动作之间有明显的先后关系，故先发生的动作要用完成式。

30. —I can’t find my purse anywhere.

—You ______ have lost it while shopping. (2008重庆卷)

A. may                  B. can                    C. should              D. would

【答案】A。

【考点】考查情态动词表推测。

【解析】may have done的意思是“可能已经做……了”，用于对过去情况作推测，又如：She’s late. I think she may have missed the train. 她迟到了。我想她可能误了火车。

31. He ______ as a national hero for winning the first gold medal for his country in the Olympics. (2008重庆卷)

A. regarded          B. was regarded  C. has regarded   D. had been regarded

【答案】B。

【考点】考查被动语态。

【解析】根据句意可知，he与regard之间为被动关系，要用被动语态，故可排除A和C；另外，由于句没有过去时间作参照，所以不宜用过去完成时。

32. The artist was born poor, ______ poor he remained all his life. (2008重庆卷)

A. and                   B. or                       C. but                     D. so

【答案】A。

【考点】考查并列连词用法。

【解析】and在此表强调，and poor he remained all his life的正常词序为and he remained poor all his life。

33. All people, ______ they are old or young, rich or poor, have been trying their best to help those in need since the disaster. (2008重庆卷)

A. even if              B. whether            C. no matter          D. however

【答案】B。

【考点】考查让步状语从句。

【解析】whether在此引导让步状语从句，意为“无论”。

34. —I am afraid I can’t return the book to you before Friday.

—______. (2008重庆卷)

A. Don’t be afraid   B. Be careful        C. Not at all    D. Take your time

【答案】D。

【考点】考查交际用语。

【解析】比较四个选项，显然只有Take your time(不用急)最符合语境。

35. Teenagers ______ their health because they play computer games too much. (2008重庆卷)

A. have damaged  B. are damaging  C. damaged   D. will damage

【答案】B(http://www.yygrammar.com/)。

【考点】考查动词时态。

【解析】此处用现在进行时表示“损害健康”这一情况正在发生。

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