影响急性胰腺炎预后的因素不包括
A．年龄大
B．低血压
C．低白蛋白
D．高血糖
E．并发症
参考答案：D
With so many orphans ________，the charity organization calls for more donations.
A．to be looked after
B．being looked after
C．to look after
D．looked after
简述假设检验过程。
