-You look so worried, what’s wrong? -More and more people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.

题型：单选题题类：模拟题难易度：普通

-You look so worried, what's wrong?

-More and more people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.

A、water B、air C、noise D、Soil

举一反三

-- They're for public. This ______ of green smart traffic is everywhere in Xiangyang city.

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