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问题 单项选择题

急性坏死性小肠结肠炎的主要病变部位是（）。

A．空肠

B．十二指肠

C．乙状结肠

D．回盲型

E．回结型

答案

参考答案：A

选择题

方程x（x﹣1）=0的解是[ ]

A．x=0

B．x=1

C．x=0或x=1

D．x=0或x=﹣1
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选择题
Once again he didn't hand in his homework _____ he had been given enough time to do it.
A. in case
B. as though
C. so that
D. even though
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