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问题 单项选择题

霍乱病人肾功衰竭的主要机制是

A．肾缺血

B．肾小管上皮坏死

C．肾间质水肿

D．肾血管痉挛

E．肾毛细血管通透性增加

答案

参考答案：A

解析：霍乱毒素可引起剧烈吐泻，造成大量水分及电解质丢失。严重脱水及周围循环衰竭使重要脏器如肾、肾上腺皮质、脑及心脏等可因缺血、缺氧而受严重影响，以致出现急性肾衰竭。

补全对话，情景问答
根据情景,从方框中选择适当的句子补全对话。

A: What about going to the movies?
B: That sounds good.
C: Yes. I'd love to.
D: It's raining.
E: It is sunny today.
F: What about watching TV at home?

A: Sam, I want to go out to play basketball. Would you like to go with me?
B: 1._____. Just wait for one minute.
A: What's the matter? 
B: 2._____. How can we play basketball in the rain?
A: Right. 3._____?
B: Going to the movies? But we still need to go out.
A: Then 4._____?
B: I think the TV show is so boring. Let's cook a nice meal at home. There is a lot of food in the fridge (冰箱).
A: 5._____! Let's begin.

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单项选择题

我国现存最早的帛画是（）。

A.《八骏图》

B.《龙凤仕女图》

C.西汉马王堆“T”形帛画
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