活产是指妊娠满28周，胎儿娩出后有（）、（）、（）、（）4项生命指标之一者
参考答案：心跳、呼吸、脐带搏动、随意肌收缩
— Who is Jerry Cooper?
— _______ ? I saw you shaking hands with him at the meeting.[ ]
A. Don’t you meet him yet
B. Hadn’t you met him yet
C. Didn’t you meet him yet
D. Haven’t you met him yet
下列英文缩写中哪个代表《固体散装货物安全操作规则》？
