下列不属于健康危险行为特征的是（）
A.后天生活习惯
B.长期稳定的行为
C.偶然性行为
D.有明显的健康危害
E.偏离行为
参考答案：C
Chicago is on ________ Lake Michigan. There is nothing in the world like ________ Chicago meat industry.
A．the；the
B．不填；不填
C．the；不填
D．不填；the
______ some problems have arisen in the process, we are confident that we can handle them.
A．As
B．If
C．While
D．Since
