25. The accident is reported to have occurred _______ the first Sunday in February. (2004上海卷)
A. at B. on C. in D. to
【答案】B。
【考点】考查介词的用法。
【解析】表示具体的某一天或星期几，或者具体某天或星期几的上午、下午或晚上，用介词on。又如：The manager had us over a barrel―either we work on a Saturday or we lose our jobs. 经理迫使我们就范，要么星期六上班，要么丢掉工作。
26. I had to buy _______ these books because I didn’t know which one was the best. (2004上海卷)
A. both B. none C. neither D. all
【答案】D。
【考点】考查不定代词的用法。
【解析】根据后文I didn’t know which one was the best 中的最高级可知，these books至少有三本，故可排除用于指两者的A和C；再根据I didn’t know which one was the best（我不知道哪本最好）可知，“这些书都很好”，只是不知那本最好，根据一般的逻辑，既然好就该买，于是就“都”买下来，所以选D。另外，从语法上看，none不能直接用于these之前，但all可以。若用none，则要说成none of these books。
27. According to a recent
A. to watch B. to watching C. watching D. watch
【答案】C。
【考点】考查非谓语动词的用法。
【解析】动词spend表示花时间做某事的句型是spend…(in) doing sth，其中的动词doing不能换成不定式或其他动词形式。又如：We spent the whole afternoon walking about town. 我们整个下午都在城里四处走。He got lost and spent hours looking for the station, and anyway it was past midnight by the time he got home. 他迷路了，找车站花了几个小时，总之，他过了午夜才到家。
28. Children under 12 years of age in that country _______ be under adult supervision when in a public library. (2004上海卷)
A. must B. may C. can D. need
【答案】A。
【考点】考查情态动词的用法。
【解析】分别将四个选项填句中，只有填A句意最通顺。must表示强制性，意为“必须、应当”。句意为：在那个国家，12 岁以下的孩子去公共图书馆的时候必须有大人的看管。
29. The first use of atomic weapons was in 1945, and their power _______ increased enormously ever since. (2004上海卷)
A. is B. was C. has been D. had been
【答案】C。
【考点】考查动词时态的用法。
【解析】根据句中的ever since可知，相关的谓语动词是指从过去某一时刻起一直延续到现在的动作或状态，故要用现在完成时，即答案选C。又如：John promised his doctor he would not smoke, and he has never smoked ever since. 约翰向他的医生承诺不再吸烟，从那以后他就不再抽烟了。I simply gave in to him, and I’ve regretted it ever since. 我居然向他让步了，后来我一直为此后悔不已。
30. The number of deaths from heart disease will be reduced greatly if people _______ to eat more fruit and vegetables. (2004上海卷)
A. persuade B. will persuade C. be persuaded D. are persuaded
【答案】D。
【考点】考查动词的时态与语态。
【解析】表示“劝某人做某事”，英语用persuade sb to do sth；又因为people与persuade是被动关系，应该用被动语态，排除A和B。又因为主语是一般将来时，条件句中用一般现在时，所以选D。
31. Bill’s aim is to inform the viewers that cigarette advertising on TV is illegal, _______? (2004上海卷)
A. isn’t it B. is it C. isn’t be D. is he
【答案】A。
【考点】考查反意疑问句的用法。
【解析】由于句子主语是Bill’s aim而不是Bill，所以排除C和D；又因为陈述句部分是肯定的，疑问尾句部分应该用否定，所以只有A正确。
32. He speaks English well indeed, but of course not _______ a native speaker. (2004上海卷)
A. as fluent as B. more fluent than C. so fluently as D. much fluently than
【答案】C。
【考点】考查as…as…结构的用法。
【解析】因为修饰动词speaks要用副词，所以可排除A和B；又因为than只能用于比较级后而不能位于原级后，排除D。句意为：他的英语讲得的确不错，不过，当然不如英语本族人讲得流利。
33. The flu is believed _______ by viruses that like to reproduce in the cells inside the human nose and throat. (2004上海卷)
A. causing B. being caused C. to be caused D. to have caused
【答案】C。
【考点】考查非谓语动词的用法。
【解析】be believed后习惯上要接不定式，故可排除A和B；又因为the flu与cause是被动关系，所以要用不定式的被动式，即选C。又如：He is generally believed to be their best player. 他被普遍认为是最好的球员。People sometimes say, ”Elephant never forget”, because they are believed to have very good memory. 人们有时说，“大象不会忘记”，因为大象被认为记性非常好。注：类似的情况还有be / thought / supposed / said / reported等，它们也要接不定式。
34. The flowers _______ sweet in the botanic garden attract the visitors to the beauty of nature. (2004上海卷)
A. to smell B. smelling C. smelt D. to be smelt
【答案】B。
【考点】考查非谓语动词的用法。
【解析】由于“发出香味”与“吸引游客”是同时发生的，故可排除表示将来意义的不定式，即排除A和D；又因为the flowers与smell (发出……味道)是主动关系，所以用现在分词短语作定语。
35. The disc, digitally _______ in the studio, sounded fantastic at the party that night. (2004上海卷)(www.yygrammar.com)
A. recorded B. recording C. to be recorded D. having recorded
【答案】A。
【考点】考查非谓语动词的用法。
【解析】因为the disc(唱片)与record(录制)是被动关系，故可排除B和D；再根据动作发生的先后关系可知，肯定是先“录制”，然后才会有“听起来”的效果，故可排除表示将来意义的不定式，即排除C。
36. American women usually identify their best friend as someone _______ they can talk frequently. (2004上海卷)
A. who B. as C. about which D. with whom
【答案】D。
【考点】考查定语从句的用法。
【解析】由于先行词指人，所以其后用于引导定语从句的关系代词应用who或whom，故可排除B和C；又因为表示“与某人交谈”，英语用talk with / to sb，所以选D。句意为：美国妇女通常把能够经常进行交谈的人看成朋友。又如：The man with whom I travelled (that I travelled with) couldn’t speak English. 和我一道旅行的人不会说英语。 He was respected by the people with whom he worked. 他受到与他一起工作的人的尊重。
37. After Yang Liwei succeeded in circling the earth, _______ our astronauts desire to do is walking in space. (2004上海卷)(www.yygrammar.com)
A. where B. what C. that D. how
【答案】B。
【考点】考查主语从句的用法。
【解析】首先根据is (to) walk in space可知，is前面是主语从句；又根据主语从句中do缺宾语，而只有what才能作宾语，所以选B。句意为：杨利伟成功绕地球飞行后，我们的宇航员们所渴望的就是在太空中行走。
38. Jasmine was holidaying with her family in a wildlife park _______ she was bitten on the leg by a lion. (2004上海卷)
A. when B. while C. since D. once
【答案】A。
【考点】考查并列连词when的用法。
【解析】when可用作从属连词（引导状语从句）和并列连词（意为“就在此时”。When用作并列连词时多用于句型was / were doing…when…did…，即表示当一个动作正在发生时，又发生另外一事。句意为：Jasmine和家人在一个野生动物园度假时，被一头狮子咬伤了腿。
39. Parents should take seriously their children’s requests for sunglasses _______ eye protection is necessary in sunny weather. (2004上海卷)
A. because B. through C. unless D. if
【答案】A。
【考点】考查状语从句的用法。
【解析】父母为什么要“认真对待孩子们买太阳镜的要求”呢？其原因是“在出太阳的天气里保护眼睛是必要的”，即后者是前者的原因，故选A。又如：The girl’s life was saved because the doctors acted so promptly. 由于医生们行动迅速，那个女孩子得救了。
40. A story goes _______ Elizabeth I of
A. when B. where C. what D. that
【答案】D。
【考点】考查同位语从句的用法。
【解析】不难看出后面Elizabeth II of England…at court这个句子就是a story的具体内容，即它是一个同位语从句。又因为同位语从句中不缺少任何意义和句子成分，应由that引导，所以选D。句意为：据说英国女王伊丽莎白二世最喜欢让一些聪明能干的达官贵族们在宫廷围绕着。
41. _______ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest. (2004上海卷)
A. Not only they brought B. Not only did they bring
C. Not only brought they D. Not only they did bring
【答案】B。
【考点】考查倒装的用法。
【解析】当not only…but also…连接两个句子时，前一个句子要用部分倒装，所以选B。又如：Not only did he speak more correctly, but he spoke more easily. 不仅他讲得更正确，也讲得更不费劲了。 Not only did he turn up late, he also forgot his books. 他不仅迟到了，而且还忘了带书。
42. Having been attacked by terrorists, _______. (2004上海卷)
A. doctors came to their rescue B. the tall building collapsed
C. an emergency measure was taken D. warnings were given to tourists
【答案】B。
【考点】考查非谓语动词的用法。
【解析】因为非谓语动词作状语，其逻辑主语原则上应与句子主语保持一致，所以很显然，句子不能是an emergency measure(紧急措施)或者warnings(警告)，因它受到袭击的不是这些东西；而doctors是来救援的，也不是受到袭击的对象，所以只能选B，而the tall building正是受到袭击的对象。句意为：那座高层建筑因受到恐怖分子的攻击倒塌了。
43. Why! I have nothing to confess. _______ you want me to say? (2004上海卷)
A. What is it that B. What it is that C. How is it that D. How it is that
【答案】A。
【考点】考查强调句的特殊问句形式。
【解析】填空句为强调句的特殊问句形式，即通过对被强调部分提问得来。由于句中的say为及物动词，其后要接宾语，而疑问词how不能用作宾语，故可排除C和D；又因为这是一个疑问句，所以is要放在it之前，排除B，只有A正确。
44. ―English has large vocabulary, hasn’t it?
―Yes. _______ more words and expressions and you will find it easier to read and communicate. (2004上海卷)
A. Know B. Knowing C. To know D. Known
【答案】A。
【考点】综合考查祈使句与非谓语动词的用法。
【解析】根据句中的并列连词and可知，and前面不可能是一个非谓语动词结构，否则没有相应的“主要动词”，据此可知，答案只能是A，即and前面是一个祈使句，整个句子为“祈使句+and+陈述句”句型。又如：Smell the flowers before you go to sleep, and you may just end up with sweet dreams. 睡前闻下这些花，你会进入甜美的梦乡。(2010江西卷) Search the website of the Fire Department in your city, and you will learn a lot about firefighting. 搜索一下你们城市消防部门的网站，你就会了解很多消防知识。(2008湖南卷)