21. China has got a good ________ for fighting against the flu with its careful and smooth organization.
A. reputation B. influence
C. impression D. knowledge
[解析]句意：在抗击流感方面，中国以认真和畅通的组织工作而获得良好的声誉。reputation 声誉;influence 影响;impression 印象;knowledge 知识。根据句意，A项正确。
[答案]A
22.In our class, when the bell rang and the teacher closed his book, it was a ________ for everyone to stand up.
A. signal B. chance
C. mark D. measure
[解析]句意：在我们的课堂上，铃声响起，老师合上书就是我们要起立的信号。signal 信号;导火线，符合句意。chance 机会，运气;mark 分数;标志;measure 措施，办法;尺寸。
[答案]A
23. The system has been designed to give students quick and easy ________ to the digital resources of the library.
A. access B. passage
C. way D. approach
[解析]句意：设计这个系统的目的是让学生迅速、方便地使用图书馆的数字资源。access to 是固定短语，意为“有权使用;有机会接近”。passage 通道，通路，与 through 连用;way 表示去某地的路;approach 通道，办法，途径，与 to 连用。
[答案]A
24.Dogs have a very good ________ of smell and are often used to search for survivors in an earthquake.
A. sense B. view
C. means D. idea
[解析]句意：狗有很好的嗅觉，常常用于搜寻地震中的幸存者。sense“感官，感觉”，如：a sense of smell/hearing/taste/touch“嗅/听/味/触觉”。view 观点，看法;means，方法;idea 主意，想法。
[答案]A
25.What's the ________ of having a public open space where you can't eat, drink or even simply hang out for a while?
A. sense B. matter
C. case D. opinion
[解析]句意：拥有这样一个公共场所，你不可以吃喝，甚至不可以走动，有什么意义呢? sense 意义;matter 问题;case 情况，状况;opinion 观点。根据句意选A项。
[答案]A
26. I bought a dress for only 10 dollars in a sale; it was a real ________.
A. exchange B. bargain
C. trade D. business
[解析]句意：我只花了10美元就买了一条裙子，真划算。exchange 互换;bargain 便宜货，廉价货;trade 贸易;business 生意。根据题意可知B项正确。
[答案]B
27.The young man made a ________ to his parents that he would try to earn his own living after graduation.
A. prediction B. promise
C. plan D. contribution
[解析]句意：这个年轻人向他的父母作出承诺毕业后将会自谋生计。prediction 预测;promise 承诺;plan 计划;contribution 贡献，四个选项都可以与 make 搭配，make a promise“许愿，承诺”，根据句意可知B项正确。
[答案]B
28. The top leaders of the two countries are holding talks in a friendly ________.
A. atmosphere B. state
C. situation D. phenomenon
[解析]句意：两个国家的高层领导人在友好的气氛中举行了会谈。atmosphere 氛围;state 状态;situation 情形;phenomenon 现象。
[答案]A
29.The ________ shoes were covered with mud, so I asked them to take them off before they got into______ car.
A. girl's; Tom's B. girl's; Toms'
C. girls'; Tom's D. girls'; Toms'
[解析]句意：那些女孩的鞋子沾满了泥巴，因此在上汤姆的车之前我让她们把鞋子脱掉。由后文的 them 可知，此处的 girl 应为复数形式，因此其所有格形式应该是 girls'，而名词 Tom 的所有格是直接在其后加's即可。
[答案]C
30.—Can you shoot that bird at the top of the tree?
—No, it's out of ________.
A. distance B. range
C. control D. reach
[解析]本题考查名词的固定搭配。out of range 在射程外;out of control 失去控制;out of reach 够不着;distance 不与 out of 搭配。由语境可知，此处表示“鸟在射程之外”，故B项正确。
[答案]B
31. To the great ________ of the citizens, no one else was infected with H1N1 except the 12 confirmed cases.
A. relaxation B. disappointment
C. relief D. surprise
[解析]to the great disappointment of sb.令某人大为失望的是;to the great relief of sb.令某人大为宽慰的是;to the great surprise of sb.令某人大为吃惊的是;无 to the great relaxation 的搭配。由句意可知，此处表示“令市民大为宽慰的是”，故C项正确。
[答案]C
32. To their disappointment, Dr Wang gave a speech about the economy without even a passing ________ to the problem of unemployment.
A.connection B.appointment
C.reference D.exploration
[解析]reference 提及，参考。句意：使他们失望的是，王博士做了关于经济的演讲却对失业问题只字未提。connection 联系;appointment 约会;exploration 探索。
[答案]C
33.We should bear in mind that social development and balance of nature should go in ________.
A.company B.sympathy
C.association D.harmony
[解析]in harmony 和谐地。句意：我们应牢记社会的发展应该和大自然的平衡和谐。company 陪伴;sympathy 同情;association 联系。
[答案]D
34.The speech that Mr Smith made today gave a strong ________ on the students.
A. expression B. expectation
C. reputation D. impression
[解析]expression 表情，表达;expectation 期望，盼望;reputation 名声;impression 印象，give an impression on sb.“给某人留下印象”，为固定搭配，故D项正确。
[答案]D
35.Eat less and take more exercise or you'll be out of ________.
A. order B. shape
C. weight D. balance
[解析]out of order 出毛病了，坏了;out of shape 健康状况不佳;变形;weight 不与 out of 搭配;out of balance 失去平衡。由句意“少吃点，多锻炼，要不然，你的身体就不好了。”可知B项正确。
[答案]B
36.When advised dieting, Marsha would say, “What's the ________ in working so hard to lose weight, only to gain it all back again?”
A. concern B. matter
C. effect D. point
[解析]concern 关心，担心;matter事物;问题;effect 后果，影响;point 意义，what's the point in doing sth.?为固定句式，意为“干某事有什么意义”，故选D。
[答案]D
37.You should take ________ of this opportunity and try to make a good impression on them.
A. care B. advantage
C. charge D. panic
[解析]本题考查名词的固定搭配。take care of 照顾，照料;take advantage of 利用;take charge of 负责，主管;panic 不与 take 搭配。由句意“你应该利用这次机会给他们留下个好印象。”可知B项正确。
[答案]B
38.I've read the letter twice, but I can't make any ________ of it at all.
A. sense B. meaning
C. explanation D. idea
[解析]本题考查名词的固定搭配。make sense of“了解……的含义”，符合句意。句意：这封信我读了两遍了，但我一点也没读懂。
[答案]A
39.Scientists have been worried for years about the ________ of air pollution on the earth's natural conditions.
A. effect B. reason
C. account D. cause
[解析]解题关键是题干中的介词 on，四个选项中只有 effect 与介词 on 搭配，意为“对……的影响”。句意：关于空气污染对地球自然条件的影响，科学家们已担心多年了。
[答案]A
40. A dog's________to his master deserves to be respected.
A. devotion B. principle
C. identity D. guidance
[解析]devotion, 忠实，热爱;principle, 原则，准则;道德操守;identity，身份;guidance, 指导。由句意“狗对主人的忠心值得尊敬。”可知A项正确。
[答案]A
