理中丸的功用是()
A.温中补虚,降逆止呕
B.温中散寒,补气健脾
C.温中补虚,和里缓急
D.温经散寒,养血通脉
E.温中散寒,降逆止呕
参考答案:B
临床上需要进行预防性矫治的情况主要有()
A.乳牙或恒牙早失
B.乳牙滞留
C.恒牙萌出异常
D.系带异常
E.以上都是
The heavy rain kept us ________________ home.[ ]
A. going
B. from going
C. to go