单项选择题

A．It is cheap and convenient.
B．It is time-saving and energy-sparing.
C．It is comfortable and safe.
D．One can make friends on the bus.
<上一题 目录 下一题>
热门 试题

填空题
Moblogging services enable users ______.
填空题
Internet cafes are spreading rapidly due to the official efforts to promote technology and improve ______.
相关试题