题目内容
9.Smoking (smoke) is bad for your heart.分析 吸烟对你的心脏不好.
解答 答案:Smoking 考查单词填空.根据句子结构要用动名词做主语,smoke是动词,故答案是Smoking
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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