桂枝在肾气丸中的主要作用是
A．温通阳气B．温经散寒C．温壮肾阳D．调和营卫E．温阳通脉
参考答案：A
It's too dark in the room. He can hardly see anything, ______? [ ]
A. can't he
B. can he
C. does he
事实是新闻的本原
