单项选择题

A．It went out of use 300 years ago.
B．It was invented after the short bow.
C．It was discovered before fire and the wheel.
D．It’s still in use today.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Every ten minutes.B．At twenty to one.C．Every half-hour.D．Once a day.
A．Every ten minutes.
B．At twenty to one.
C．Every half-hour.
D．Once a day.
单项选择题
A．To overcome the problem of weak light.B．To take more photographs.C．To photograph astronomical objects without using a telescope.D．To spend less time at their telescopes.
A．To overcome the problem of weak light.
B．To take more photographs.
C．To photograph astronomical objects without using a telescope.
D．To spend less time at their telescopes.
相关试题