桩冠粘固前消毒根管常用（）
A.碘酊
B.0.1％新洁尔灭
C.FC
D.95％酒精
E.75％酒精
参考答案：E
_____ is spoken by the largest number of people in the world. [ ]
A. English
B. Chinese
C. German
D. French
规避风险和价格发现是期货市场的两个基本功能。( )
