狱内暴力案件包括（）
A.狱内诈骗
B.狱内杀人
C.狱内盗窃
D.狱内伤害
E.狱内团伙
参考答案：B, D
Many people _________ lose one of their senses have made great achievements.
A．who
B．whom
C．which
D．what
如图所示，圆轴的扭矩图为：（）
A.A
B.B
C.C
D.D
