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【单选题】
Now museums are no longer restricted to the privileged few, but ______.A.
have higher demands of museums
B.
are open to more people with different social background
C.
to lengthen their opening hours
D.
charge too little for admission
E.
have been built and open to public
F.
by lowing the admission fees
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【简答题】人体的血浆渗透压包括 和 。
【单选题】一How can I help you, sir? 一-It' s about this watch. The alarm doesn't work. I only bought it two weeks ago. It's still under warranty but I must say, for the amount of money I paid for it, I' m very d...
A.
I' m afraid we can't help you.
B.
I' m so sorry you’ve been inconvenienced.
C.
You must have put the watch in the water.
D.
What is the price of the watch?
【单选题】下列有关内环境和稳态的说法，不正确的是 [ ]
A.
人体的内环境主要包括血浆、组织液和淋巴
B.
人体内环境pH、渗透压等保持相对稳定是细胞正常代谢所必需的
C.
氧气与血红蛋白的结合发生在内环境中
D.
血浆中蛋白质含量明显高于淋巴和组织液
【简答题】We can't put a price _______ friendship.
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