单项选择题

They did an experiment because they ______.

A．wanted to know whose watch was better
B．liked their lab
C．wanted to repair their watches
D．had a basin of water in their lab
<上一题 目录 下一题>
热门 试题

单项选择题
The two scientists were quarrelling at the beginning of the story, because ______.
A．the Japanese watch was better
B．the German watch was better
C．each of them thought his own watch was better than the other's
D．both the watches were wrong
单项选择题
After putting the Japanese watch in water for 20 minutes, two scientists found ______.
A．it was a good watch
B．it went forward
C．it went faster than the German one
D．it went backwards 120 minutes
相关试题