电离室探测射线依据的是（）。
A.电离作用
B.荧光现象
C.感光效应
D.康普顿散射
E.光电效应
参考答案：A
单项选择。
Can you walk ? You are too ______. [ ]
A. slow, slow
B. quickly, slowly
C. quickly, slow
D. slowly, quickly
_____ more and more students graduating from college, it is harder for them to find suitable jobs.
A．For
B．As
C．With
D．Because
