题目内容
7．Reading some books ________ good for all of us，___________？（ ）| A． | are，aren't they | B． | is，isn't it | C． | have，don't they | D． | has，doesn't it |
分析 读一些书对我们所有人都有好处，不是吗？
解答 答案：B
动名词词组Reading some books 做的是主语，时态为一般现在时，所以谓语动词用单数is，因为句子的前半句是肯定句，所以后面的反义疑问句用否定的反问，结合句意：读一些书对我们所有人都有好处，不是吗？用it代指读书这件事情，故选B．
点评 本题考查的是主谓一致和反义疑问句，看清主语和动词是解答本题的关键．
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