肠阿米巴病肠穿孔时的临床表现错误的说法是（）

A.肠鸣音消失

B.局限性腹膜刺激征

C.慢性病程

D.进行性腹胀

E.剧烈腹痛

Certainly man must ______ the future, and find ways of providing for his use.
A. look to B. look up C. look for D. look on