用姜汁、食醋含漱或内服解毒的是（）A．关木通 B．草乌 C．雄黄 D．蟾酥 E．天南

The teacher just took down the names of the students _______ during the exam.

A．caught cheating

B．caught to cheat

C．catching cheating

D．to catch cheating

As a good teacher,   he should use different ways to encourage all children to realize their full________

and achieve their goals. [ ]

A. possibility  

B. conception

C. potential  

D. difference

不同物体的质量大小千差万别．在一元硬币、大头针、太阳和银河系四个物体中，质量最大的是______，最小的是______．

盐酸哌替啶属

A．解热镇痛药
B．麻醉性镇痛药
C．全麻药
D．局麻药
E．抗精神失常药

离子交换器树脂失效后（）