In many places in China bicycle is still poplar means of transportation.A. a; theB. /; aC

问题补充：

In many places in China, bicycle is still poplar means of transportation.

A. a; the

B. /; a

C. the; a

D. the; the

答案：

A. a; the

B. /; a

(答案→)C. the; a

D. the; the

解析：本题考查冠词的用法。the+ 单数名词：表示类别; a + 单数名词：表示泛指。