回阳救急汤的功用是（）
A.回阳救逆，益气养阴
B.回阳救急，养血通脉
C.回阳固脱，益气生脉
D.回阳救逆，散寒止痛
E.破阴回阳，散寒通脉
参考答案：C
用rise, arise, raise和arouse的适当形式填空。
1. The speech made by Yu Dan__________ great attention.
2. New difficulty will _________ from such situation.
3. I was tired of the quarrel ___________between them.
4. After the earthquake many volunteers ___________money for people in great need.
5. My spirits__________ when I heard the good news.
6. I saw tears___________ from her eyes.
如图所示，弹性杆插入桌面的小孔中，杆的另一端连有一个质量为m的小球，今使小球在水平面内作匀速圆周运动，通过传感器测得杆端对小球的作用力的大小为F，小球运动的角速度为ω，重力加速度为g．则小球圆周运动半径为（ ）
A．Fmω2
B．F-mgmω2
C．F2-m2g2mω2
D．F2+m2g2mω2
