庇护的对象主要是（）
A.普通刑事犯
B.政治犯
C.宗教犯
D.军事犯
参考答案：B
— Could you tell me ______?
— Sorry, I don't know. [ ]
A. When did the train arrive
B. When the train arrived
C. When arrived the train
D. The train when arrived
一组数据中出现次数最多的那个数值是( )。
A．平均数
B．众数
C．极差
D．标准差
