单项选择题

From 1970 to 1980 bicycle production increased ______.

A．ten-folds
B．ten folds
C．tenfold
D．ten-fold
<上一题 目录 下一题>
热门 试题

单项选择题
The boy was ______ by a milk float and taken to hospital.
A．run off
B．run out
C．run over
D．run through
单项选择题
Many people have applied for the ______ position.
A．empty
B．bare
C．vacant
D．blank
相关试题