Please read the _____ before you take the medicine.

A. introductions

B. explanation

C. instruction

C 【解析】 句意:吃藥之前請閱讀說明書。本題考查名詞詞義辨析。A. introduction介紹,名詞;B. explanation解釋,名詞;C. instruction說明,名詞。根據(jù)句意,故選C。
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根據(jù)短文內(nèi)容,完成下面的表格。

World Battles Against Air Pollution

China

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The

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States

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