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【简答题】
当以酚酞作指示剂时，用NaOH标准溶液测定某HCl溶液的浓度时，已知NaOH标液在保存时吸收了少量的CO 2 ，对分析结果的影响将会______(偏高、偏低或无影响)。
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举一反三
【判断题】Where to sit in a western dinner is often determined by the identities and social status of diners.()
A.
正确
B.
错误
【单选题】A western dinner usually consists of __________.
A.
a starter, a main course and a dessert
B.
a starter and a main course
C.
a main course and a dessert
D.
a starter, a main course and a coffee
【单选题】听力原文：W: Why are you leaving so early? The movie doesn't start till seven. M: I don't want to be at the traffic there. It's a nightmare on the expressway during rush hour. Q: What does the man mean? (1...
A.
He doesn't usually get up at 7: 00.
B.
He doesn't know the way to the theater.
C.
He wants to go early to avoid a traffic jam.
D.
He leaves the theater before the movie is over.
【单选题】People never ask for ______second bowl of soup at a dinner party in western countries.
A.
the
B.
a
C.
another
D.
the other
【单选题】听力原文：M: My tape recorder doesn't work. What do you think I should do? W: Why not call Mr. Jackson? What does the woman mean?
A.
She doesn't want to ask Mr. Jackson herself.
B.
She doesn't want to work for Mr. Jackson.
C.
Mr. Jackson may have broken the tape recorder.
D.
Mr. Jackson might fix the tape recorder.
【单选题】What can you do if having dinner with western people in the western?
A.
Wash hands before each meal
B.
The knife and spoon are placed on the left
C.
Talk to the people around the table
D.
Put the napkin in front of your face
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