道地药材特点不包括
A．历史悠久B．产地很远C．产量宏丰D．品种优良E．炮制考究
参考答案：B
呼吸衰竭的发病机制主要有（）
A.肺泡通气不足
B.肺内动静脉解剖分流增加
C.酸碱平衡失调
D.V／Q比例失调
E.弥散功能减退
It was in Beihai Park _____ they made a date for the first time ______ the old couple told us their love story.
A．where; that
B．that; that
C．where; when
D．that; when
