下列何药不是桃核承气汤的组成药物（）.
A.大黄
B.枳实
C.芒硝
D.桂枝
E.甘草
参考答案：B
They need twenty more workers ______ their group to do the job..
A．except
B．but
C．beside
D．besides
高标号的混凝土，一定要用高标号的水泥制得。( )
