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題組（單個主語時的主謂一致）
1. Every possible means ____ to prevent the air pollution, but the sky is still not clear.（2000,上海春）
A. is used B. are used C. has been used D. have been used
分析：①主語為every possible means，謂語用單數。若主語為all possible means，則謂語用復數。②后句提示用現在完成時。選C。
2. Mathematics ____ the language of science.(全國高考題)
A. is B. are going C. are D. am 分析：單數。選A。
3. The population of
4. The population of the city ____two million. Two thirds of the population ____ workers.(be)
分析：前者填is（總體）,后者填are（成員）。
5. A survey of the opinions of experts ____ that three hours of outdoor exercise a week ____good for one's health.（2007,江西） A. show; are B. shows; is C. show; is D. shows; are
分析：①第一空，主語是a survey，謂語用單數。②第二空，主語是three hours of outdoor exercise a week（每周三小時的戶外運動），是一種習慣，謂語用單數。選B。
6. Listening to loud music at rock concerts caused hearing loss in some teenagers. (2010,湖南).
A. is B. are C. has D. have
分析：①非謂語動詞短語作主語時，謂語用單數。②現在完成時。選C。
7. When and where to go for the holiday ____ yet.(2003,上海春) A. are not decided B. have not been decided C. is not being decided D. has not been decided 選D。
8. All we need ____ a small piece of land where we can plant various kinds of fruit trees throughout the growing seasons of the year. （2014,湖南）A．are B．was C．is D．were
句意：我們所需要的就是一小塊土地，在整個一年的生長季節，我們能夠栽種各種不同的果樹。
解析：All we need is a small piece of land. 選C。
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