起搏器最基本的心脏起搏方式为（）
A.VVI
B.AAI
C.DDD
D.VVIR
E.DDDR
参考答案：A
Drivers shouldn't be allowed _______ after drinking, or they will break the law.[ ]
A. drive
B. driving
C. to drive
D. to be driven
只对肠外阿米巴病有效
A．甲硝唑B．依米丁C．替硝唑D．二氯尼特E．氯喹
