题目内容

14.Polluted air isharmful (有害的) to people's health.

分析 被污染的空气对人的健康是有害的.

解答 73.harmful,考查形容词的用法,由中文意思可知应使用动词harm的形容词形式harmful,be harmful to"对…有害".

点评 考查词汇的记忆,在平时的学习中,要对词汇的应用进行积累.

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