社会不公平的原因中不包括( )。
A．制度建设原因
B．个人自己的原因
C．历史的原因
D．政策的原因
参考答案：D
The two nurses _____ 100,000 yuan by the police but donated it to victims of the explosion. [ ]
A. rewarded
B. would be rewarded
C. have been rewarded
D. had been rewarded
（x﹣3）（x+2）=( )，（x﹣2）（x+2）=( )
