According to James Alan Fox, the challenge to criminal justice in the U.S.A. is ______.

A．Because they can’t be predicted.
B．Because they happen very often.
C．Because they kill more people than other disasters do.
D．Because they are more disastrous.

A．Man knows where the society is going.
B．People don’t welcome the rapid development of modem society.
C．The author is worried about the future of our modem society.
D．Man can do nothing about the problem of pollution.