【題目】People are concerned about the air quality they _____________.

A.breathB.breatheC.breakD.bother

【答案】B

【解析】

考查動詞詞義辨析。句意:人們關(guān)心他們呼吸的空氣質(zhì)量。A. breath 名詞,呼吸;B. breathe呼吸;C. break打破;D. bother煩擾。根據(jù)上文the air quality可知是指“呼吸的空氣質(zhì)量”,故排除C、D選項(xiàng);且此處主語為they,句子缺少謂語動詞,故選B。

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