—Noise is _____to human’s health.
—Yes, we shouldn’t talk loudly in public


  1. A.
    harmful
  2. B.
    harm
  3. C.
    harmless
A
試題分析：句意：噪音對人類的健康有害。是的，我們不應(yīng)該在公眾場合大聲講話。harmful有害的，形容詞，故選A
考點：harmful一詞的用法
點評：be harmful to對…害的，屬于固定短語。此類題目不難，重在理解句意和選項的意思，細心作答即可。
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