人参养荣汤较十全大补汤（）
A.温补力更强
B.增宁心安神之功
C.清热力更强
D.增养阴生津之功
E.活血力更强
参考答案：B
----- I am certain David has told you his business troubles.
----- ______, it is no secret that he owes a lot of money to the bank.
A．Therefore
B．However
C．Anyway
D．Though
设A，B是两个事件，P（A）=0.3，P（B）=0.8，则当P（A∪B）为最小值时，P（AB）=（）。（）
A.0.1
B.0.2
C.0.3
D.0.4
