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 1

A

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。