These chemicals are (A . helpful B . harmful) to your health.

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1. (2019七下·龙岗期末) These chemicals are (A . helpful B . harmful) to your health.

These chemicals are harmful to your health.

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使用过本题的试卷

广东省深圳市龙岗区2018-2019学年七年级下学期英语期末考试试卷（含听力音频）