春季调肝，用药当：（）
A.增酸省甘
B.省酸增甘
C.省酸增辛
D.省酸省咸
E.省酸收敛
参考答案：B
It is obvious to the students ________ they should get well prepared for their future.[ ]
A．as
B．which
C．whether
D．that
使用Outlook Express时，一次发送操作可以发送给多个接收者。
