— Air quality in our city is becoming worse and worse.

—Yes. These days' PM2.5 readings are frightening. We must do something to ______air pollution.

A. reduce                B. remove      C. collect        D. gather

 

【答案】

A

【解析】

試題分析：句意：--我們的城市的空氣質(zhì)量越來越差。--是的，這些天的PM值是2.5真讓人害怕。我們必須采取措施來減少空氣污染。A. reduce減少； B. remove移動(dòng)； C. collect收集； D. gather收集。

結(jié)合所給選項(xiàng)，故選A。

考點(diǎn)：考查詞義辨析

 

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