世界范围内，佛教分为哪三条路线传播
参考答案：世界范围内，佛教分为北传、南传和藏传三条路线。
The old man _______ up late,but now he _________ up early.
A．is used to get; used to get
B．used to get; is used to getting
C．used to get; is used to
D．is used to get; is used to getting
交流电的电压有效值，（）Um。
