--- Does Mike play basketball every day?

--- He ________ that way, but now he plays only on Sunday.

A．used to play

B．is used to play

C．used to playing

D．was used to play

统计指数按其所表明的经济指标性质的不同分为（）。

A.简单指数和加权指数

B.综合指数和平均指数

C.个体指数和综合指数

D.数量指数和质量指数