下列生理过程哪项是负反馈
A．血液凝固过程
B．减压反射
C．排尿反射
D．排便反射
E．分娩
参考答案：B
小于2的最大两位小数是______．
— I want someone to write the composition for me.
— No! As a student, you _____ depend on yourself. [ ]
A. shall
B. will
C. can
D. may
