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【单选题】
心瓣膜的结构特点是A.
表面衬一层间皮细胞，中心为致密的结缔组织
B.
表面衬一层间皮细胞，中心为软肾组织
C.
表面衬一层内皮细胞，中心．为致密结缔组织，与心骨骼相连
D.
表面衬一层内皮细胞，中心为软骨组织
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反馈参考答案：
举一反三
【简答题】如何隐藏和显示“标尺”?
【单选题】Woman: Have you ever visited Linda's room? Man: No. Is there anything? Woman: Well. . . you can't imagine it. It looks just like a total wreck. Question: What is Linda's room like?
A.
It is very neat.
B.
It is a mess.
C.
It is very beautiful.
D.
It is a hell.
【单选题】Salesman：______ Customer：Yes. What size is that green T-shirt?
A.
Anything I can do for you?
B.
Do you want to buy anything?
C.
Excuse me， what are you doing?
D.
Are you just looking around?
【简答题】You know you have to read “between the lines” to get the most out of anything. I want to persuade you to do something equally important in the course of your reading. You have to “mark between the lin...
【单选题】---Is there anything else I can do for you, Jack? --- No, thanks. I really appreciate ______ when you lent all your notes to me before the exam.
A.
that
B.
one
C.
it
D.
the one
【单选题】听力原文：W: I'm going to the stationary store for some pencils. Want anything? M: See if you can pick up a stapler for me. Q: What does the man mean? (16)
A.
He wants her to pick up some stamps.
B.
He wants her to buy some tables.
C.
He wants her to buy a stapler.
D.
He wants her to buy some pencils.
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