单项选择题

以下哪项不是婴儿腹泻的病因

A.肠道内感染
B.胃肠道SIgA较高
C.肠道外感染
D.肠道菌群失调
E.食物摄入量过多
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听力原文：M：Why is Susan so tired and upset?W：She's been studying day and night for her final exam．I warned her many times to prepare earlier，but she wouldn't listen．Q：What does the woman mean?(17)A.Susan accepted the alarm.B.She told Susan not to study late at night.C.She had often advised Susan to study.D.Susan is too tired to study any morE.
A.I
B.
Q：What
C.Susan
D.
B.She
E.
C.She
F.
D.Susan
单项选择题
某产妇，23岁，合并心脏病，现产后1小时，请问该产妇需要严密监测多长时间，以防出现心力衰竭
A.3天
B.4天
C.5天
D.6天
E.7天
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