血府逐瘀汤的功效是()
A.活血祛瘀,散结止痛
B.活血祛瘀,行气通络
C.活血祛瘀,疏肝通络
D.活血祛瘀,温经止痛
E.活血祛瘀,行气止痛
参考答案:E
什么是电磁感应现象?什么是感应电动势?它的方向如何确定?
Tom's little brother wasn't _____ to go to school.[ ]
A. enough old
B. old enough
C. enough young
D. young enough