单项选择题
A.35% B.37% C.38% D.39% E.40%
A.肠鸣音出现 B.腹胀减轻 C.水、电解质平衡 D.大便隐血转阴 E.白细胞从增多到下降
A.65% B.70% C.75% D.80% E.75%~80%