具有安蛔止痛作用的药物是
A．五味子B．乌梅C．诃子D．肉豆蔻E．山茱萸
参考答案：B
— Is the meeting held in Room 302 or 303 ?
— It should be 302. But I hear that it _____ till tomorrow.
A．was put off
B．will put off
C．has been put off
D．is put off
引鞋式光杆打捞器是在（）打捞抽油杆的。
A.油管内
B.套管内
C.油管和套管内都可以
D.特定环境下
