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问题 单项选择题 A1/A2型题

左侧卧位可使腹痛减轻提示何种疾病（）

A.十二指肠淤滞症

B.胰体癌

C.反流性食管炎

D.胃黏膜脱垂

E.胃溃疡

答案

参考答案：D

选择题
How tired you look! You _____ these weeks. I think you need a holiday before you burn out.

A. had overworked
B. overworked
C. have been overworking
D. were overworked
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单项选择题

直升机与定翼机相比（）.

A.都能定点转弯

B.都能沿任意方向飞行

C.直升机能后飞
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