鱼腥草具有的功效是( )
A．凉血活血
B．祛痰排脓
C．祛瘀利尿
D．排脓利尿
参考答案：D
具有CD4分子表面标志的是( )
A．TCB．TSC．THD．NK细胞E．嗜酸性粒细胞
23. Failure as he has been in his previous attempts, he still sticks _________ the research aimed _______ increasing production.
A．in; to
B．out; at
C．on; in
D．with; at
