在同一圆里，所有的直径都相等，所有的半径也相等．______．
根据圆的特征可得：在同一圆里，所有的直径都相等，所有的半径也相等；
故答案为：正确．
He used to ____late, but now he is getting used to _______early.
A．get up, get up
B．getting up , get up
C．get up, getting up
D．getting up , getting up
-_______ does she chat with friends on the Internet?
-Once a week. [ ]
A. How long
B. How much
C. How many times
D. How often
