The population of this city ,forty percent of which, 15% in the last three yearsA. are Ge

The population of this city ,forty percent of which , 15% in the last three years
A. are Germans, has risen by
B. are Germen, has fallen by
C. is Germans, have been increased by
D. is Germen, have been reduced by

(答案→)A. are Germans, has risen byB. are Germen, has fallen byC. is Germans, have been increased byD. is Germen, have been reduced by解析：考查population的用法以及主谓一致。句意：这个城市的人口40%是德国人，在过去的三年中已经增加了15%。population强调人口是多少时，若作主语，谓语动词用单数形式。population强调人口的身份或特征，若后面作表语的名词是复数时，谓语动词则要用复数形式。据题意，第一空中Germans 用复数，则谓语动词用复数，Ｂ、Ｃ两项可排除，而the population of this city强调人口，谓语动词需用单数，故本题最佳答案为Ａ。

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