--Why do you like living here？

-- Because it’s quite quiet. There are              cars on the street.

A．a lot of

B．a few

C．few

D．little

乳粉是以牛乳为原料，经杀毒、浓缩和______而制成的粉末状产品

A．冷冻干燥
B．普通干燥
C．微波干燥
D．喷雾干燥