肠粘连、绞窄性腹外疝及小肠扭转所致的肠梗阻多见于
A．老年人B．青壮年C．2岁以内小儿D．3岁以上儿童E．新生儿
参考答案：B
— May I use your bike? _______ is broken.
— Sure.[ ]
A. My
B. Mine
C. Yours
减色效应(hypochromic effect)
