【题目】It is known to us that smoking is (有害的)to our health.
在线课程【答案】harmful
【解析】我们都知道吸烟有害于身体健康，有害的在此为形容词，修饰名词health。故填harmful。
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It is known to us that smoking is to our health.
编辑：chaxungu时间：2026-04-27 03:08:38分类：高中英语题库
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