用百分表测量偏心距时，表上指示出的最大值和最小值之差的( )应等于偏心距。
A．1/3
B．两倍
C．一倍
D．一半
参考答案：D
－Dad, could I stay out late tonight?
－__________. You have to get up early tomorrow morning.
A．Yes, sure
B．No, you can't
C．All right
D．Sorry, I can't
根据句意及首字母提示完成单词。
1. They have been playing football s__________ ten o'clock.
2. They are r__________ money for the Hope School.
3. Last month my mother bought me a p__________ of shoes.
4. The ice is too thin for you to s__________ on.
5.Can you help us? Now we r__________ out of fuel.
