-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

（）获取客户的信息是面对大堂中所有客户展开的。

A.问卷调查

B.大堂调查

C.电话调查

D.拜访调查