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A．It doesn't have a nice view.B．It doesn't come with a sauna bath.C．It's too expensive

A. It doesn't have a nice view.
B. It doesn't come with a sauna bath.
C. It's too expensive.
D. It doesn't have a kitchenette.

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用NaOH溶液滴定某弱酸HA时(两者浓度相同)，当滴定至一半时，溶液的pH值为5．00；当滴定至化学计量点时，溶液的pH值为8．00；当滴定至200％时溶液pH值为12．00。则该酸(HA)的pKa值是()。

A. 5．00
B. 8．00
C. 12．00
D. 7．00

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听力原文：W: Hello. Holiday Hotel. May I help you？
M: Yes, I'd like to reserve a room for a couple on the 13th of September.
W: Okay. Let me check our books here for a moment. You want a room for a couple on the 13th of October, right？
M: No. It is September, not October.
W: OH, I'm sorry. Let me see here. Hmm.
M: Are you all booked that night？
W: Well, not yet. We do have one suite available, complete with a kitchenette and a sauna bath. And the view of the sea is great, too.
M: How much is that？
W: It's only $ 200 dollars, plus a 10% room tax.
M: Oh, I'm afraid that's a little too expensive for me. Do you have a cheaper room available either on the 12th or 14th？
W: Well, would you like a smoking or a non-smoking room？
M: The non-smoking one, please.
W: Okay, we do have a few rooms available on the 12th; we're full on the 14th, unless you want a smoking room.
M: Well, how much is the non-smoking room on the 12th？
W: 80 dollars, plus the 10% room tax.
M: Okay, that'll be fine. I'll take this one.
W: An right. Could I have your name, please？
M: Yes. Torn Delfino.
W: How do you spell your last name, Mr. Delfino？
M: D-E-L-F-I-N-O.
W: Okay, Mr. Delfino, we look forward to seeing you on September 12th.
M: Okay. Goodbye.
(23)

A non-smoking room.
B. A smoking room.
C. A suite with a kitchen.
D. A room with a great view.

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气液色谱可以通过()改变柱子的选择性。

A. 改变载气的种类和流速
B. 改变载体的种类和粒度
C. 改变固定相的种类和柱温
D. 改变固定相的涂渍量

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In this passage the author really concerns ______.

A. the ethical behavior. we need in the world
B. the necessity of ensuring the traffic safety
C. the relation between traffic accidents and ethics
D. who should take the responsibility for unsafe traffic

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A．It doesn't have a nice view.B．It doesn't come with a sauna bath.C．It's too expensive

A. It doesn't have a nice view. B. It doesn't come with a sauna bath. C. It's too expensive. D. It doesn't have a kitchenette.

用NaOH溶液滴定某弱酸HA时(两者浓度相同)，当滴定至一半时，溶液的pH值为5．00；当滴定至化学计量点时，溶液的pH值为8．00；当滴定至200％时溶液pH值为12．00。则该酸(HA)的pKa值是()。

气液色谱可以通过()改变柱子的选择性。

In this passage the author really concerns ______.

A. It doesn't have a nice view.
B. It doesn't come with a sauna bath.
C. It's too expensive.
D. It doesn't have a kitchenette.