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【单选题】
Section B Directions: In this section, you will read 5 short conversations between a man and a woman. At the end of each conversation there is a question followed by 4 choices marked A, B, C and D. Choose the best answer to the question from the 4 choices by marking the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET. Man: I'm going to ask the neighbors to turn the music down. I can't hear myself think. Woman: Do you really think it makes any difference to them? Question: What does the woman mean?A.
He should have told them earlier.
B.
It is of no use to turn the music down.
C.
The neighbors will not listen to him.
D.
He should focus on his own thinking.
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【单选题】Which of the following sentences has the word "suspect" with the same meaning and usage as that in "Customers noticed a suspect package by the door"?
A.
Police suspected that she had some connection with the robbery.
B.
Jess had been killed, and her husband was the obvious suspect.
C.
He might have suspect motives in accusing her of malpractice.
D.
I suspected Alex of deliberatly forgetting her purse in the hotel.
【单选题】用NaOH溶液滴定某弱酸HA，若两者浓度相同，当滴定至50%时，溶液的pH=5.00；当滴定至。100%时，溶液pH=8.00；当滴定至200%时，溶液pH=12.00。则该酸 值是( )。
A.
5.00
B.
8.00
C.
12.00
D.
7.00
【单选题】用NaOH溶液滴定某弱酸HA,若两者浓度相同,当滴定至50%时溶液pH = 5.00; 当滴定至100%时溶液pH = 8.00;当滴定至200%时溶液pH = 12.00,则该酸pKa值是
A.
5.00
B.
8.00
C.
12.00
D.
7.00
【单选题】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
【单选题】1977年,美国罗彻斯特大学医学院精神病学和内科学教授恩格尔提出的模式是()
A.
生物—心理—社会医学模式
B.
神灵主义医学模式
C.
自然哲学医学模式
D.
机械论医学模式
E.
生物医学模式
【单选题】用NaOH溶液滴定某弱酸HA,若两者浓度相同，滴定至50%时溶液pH=5.00，滴定至100%时溶液pH=8.00，则该酸PKa为
A.
6
B.
8
C.
12
D.
5
【单选题】用NaOH溶液滴定某弱酸HA,若两者浓度相同,当滴定至50%时溶液pH = 5.00; 当滴定至100%时溶液pH = 8.00;当滴定至200%时溶液pH = 12.00,则该酸pKa值是
A.
5
B.
8
C.
12
D.
7
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