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
试题分析：40%的人口，强调人口的数量，谓语动词应该用复数形式，排除C、D。德国人，the Germans。分析句子结构可知“forty percent of which_____”为非限制性定语从句，所以第二个空的主语为The population of this city，这个城市人口的数量，应该是一个数字，故谓语动词用单数形式。句意：这个城市的人口在过去的三年里上升了15%，它40%的人口是德国人。故选A。 考点：考查主谓一致