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【单选题】
扩散属于被动转运,都是从高浓度向低浓度转运,不需要能量,根据膜蛋白不同分为载体转运和通道转运,其中哪种具有饱和现象。A.
载体转运
B.
通道转运
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【单选题】听力原文：M：I am told that there is something wrong with your video camera? Let me see what's the matter. W: Oh, I went to the shop and had them replace it with a new one yesterday afternoon. What did the ...
A.
She went to the shop.
B.
She returned it to the shop.
C.
She had it changed.
D.
She replaced it with a new one.
【简答题】What are the six M's mentioned in the video?
【单选题】听力原文：M: What did you think about the video we were supposed to watch for Professor Stephen' s class? W: I didn't see it. Was it good? M: Really it was. It was about stress, the effects of stress on th...
A.
It is required by Professor Stephen.
B.
It is very interesting.
C.
He wants to know about heart attacks.
D.
He took part in the discussion.
【简答题】某用电器接在220伏的电路中,通过的电流为0.5安 通电两小时 消耗电能多少度?
【单选题】What is wrong with the video recorder?
A.
It was slightly damaged.
B.
It destroys video tapes.
C.
Its compartment is broken.
D.
It produces unclear visions.
【单选题】新生儿出生时,身体红,四肢青紫,心率90次/分,呼吸15次/分,四肢略屈曲,弹足底有皱眉,其 Apgar评分为
A.
3分
B.
4分
C.
5分
D.
6分
E.
7分
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