Question

 - 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

Answer

A

【解析】

 试题分析：句意：——我们城市的空气质量正在变得越来越糟糕。——是的。这些日子的PM2.5指数吓人。我们必须采取措施减少空气污染。A. reduce 减少；         B. remove 移动；    C. collect收集；  D. gather聚集；根据Air quality in our city is becoming worse and worse.可知空气质量越来越差，因此要减少空气污染。故选A。

 考点：考查动词词义辨析的用法。