单项选择题

A．true
B．untrue
C．impossible
D．possible
<上一题 目录 下一题>
热门 试题

填空题
it wasn’t until other scientists developed the kind of paper we now use that good printing was possible and photography became truly modern
单项选择题
A．delayB．deliverC．conveyD．communicate
A．delay
B．deliver
C．convey
D．communicate
相关试题