近似数400万，它的有效数字是[ ]
A．4
B．4，0
C．4，0，0
D．4，0，0，0，0，0，0
答案：C
桂枝加附子汤证的汗出机理是：（）
A.里热，迫津液外泄
B.营卫不和
C.肠胃实热结聚迫津外泄
D.阳虚卫外不固
E.邪正分争、正气欲驱邪外出
Tom has a little money in the bank, support his family.
A．on which to
B．with that to
C．with that to
D．with which to
