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【单选题】
角膜维持透明的基础不正确是（ ）A.
不含血管
B.
各层细胞及胶原纤维排列规整且指数一致
C.
内皮细胞的屏障功能使角膜保持相对的脱水状态
D.
上皮细胞含色素
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【简答题】Long conversation two Questions 12 to 15 are based on the conversation you have just heard. 12. A)She is shy when speaking in front of people B)She forgot to prepare the class C)She made a serious mis...
【简答题】下列各项适用于一切社会形态的历史唯物主义原理不包括？
【单选题】听力原文：W: I am sorry I forgot to return your history book last night. M: It doesn't matter because the test isn't coming until Monday. Q: What does the man imply? (13)
A.
It is not too [ate for the man to return the hook.
B.
The man should have returned the book earlier.
C.
She will probably won't do well on the coming Monday's test.
D.
The man should have been more thoughtful.
【简答题】根据句意及首字母提示完成句子。 1. T are the people from 13 to 19. 2. Mary b some money from me yesterday, but she forgot to pay me back. 3. I like music very much. I want to buy a CD p . 4. Could you please buy some...
【简答题】13) She forgot to ____________ the letter into the envelope.
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