牡蛎的功效是()。珍珠母的功效是()。
A.平肝潜阳,清肝明目
B.软坚散结,平肝潜阳
C.软坚散结,利水
D.软坚散结,滋阴潜阳
E.软坚散结,活血止痛
参考答案:B,A
自患者体内分离流感病毒最好取 ()
A.咽漱液
B.粪便
C.血液
D.脑组织
E.尿液
Susan went to tidy up the house;____ Lily started to prepare lunch. [ ]
A. however
B. when
C. meanwhile
D. but