大黄牡丹汤中配伍大黄的意义在于
A．泻肠中湿热瘀结之毒
B．泻下通便，荡涤肠胃
C．清热泻火止血
D．生肌敛疮
E．清热解毒消肿
参考答案：A
Most comets have two kinds of tails, one made up of dust, ________made up of electrically charged particles called plasma.
A．one another
B．the other
C．other ones
D．each other
能产生神经毒素的痢疾杆菌是
A．志贺痢疾杆菌B．福氏痢疾杆菌C．舒密次痢疾杆菌D．鲍氏痢疾杆菌E．宋内痢疾杆菌
