The number of smokers in China decreased in recent years.A. hasB. haveC. isD. are

问题补充：

The number of smokers in China decreased in recent years.

A. has

B. have

C. is

D. are

答案：

(答案→)A. has

B. have

C. is

D. are

解析：考查主谓一致：句意：中国抽烟人的数量在最近几年一直在减少。主语是the number of+名词复数“…的数量”，谓语用单数，时间是recent years和现在完成时连用。选A。