第10题: [单项选择]About two thirds of the population in China ______ in the countryside. A. is still living B. were still living C. was still living D. are still living 参考答案:A 答案解析:本题测试的是主谓一致的用法。全句的意思是:“中国2/3的人口仍然生活在农村。”主语带有分数和百分数时,谓语动词的单复数由of后面的词来决定。因此,谓语动词应该用单数。句子指目前的情况,应该用现在时态。