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【單選題】
在某一化學反應中，反應物A的濃度在20 s內從1.0 mol/L變?yōu)?.2 mol/L，則在這20 s內以A濃度的變化表示的平均反應速率為（ ）
A.
0.04 mol / (L?s)
B.
0.04 mol / L
C.
0.08 mol / (L?s)
D.
0.08 mol / L
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舉報參考答案：
舉一反三
【單選題】The example of the cartoon book characters is taken in the passage to______.
A.
support the viewpoint that anger and hatred harm physical and mental health
B.
introduce a famous expert
C.
let the reader know the different colours of cartoon faces
D.
show how to control one’s temper
【單選題】The author of the passage tries to make his viewpoint clear ______.
A.
by raising his own examples
B.
based on his own experience
C.
by mentioning some studies
D.
by mentioning some typical patients
【單選題】From the passage, we can infer the man _____.
A.
was thankful for their kind act
B.
felt ashamed and slipped away
C.
was hungry and ate a lot of food
D.
was too proud to accept their offer
【單選題】The manager of the restaurant looked frightened because _____.
A.
the man was not friendly
B.
he had fired the man before
C.
the man had stolen something from the restaurant
D.
he was afraid the man wouldn’t afford to pay the food
【單選題】The phrase “made my day” in the last paragraph probably means ______.
A.
wasted my money
B.
moved me deeply
C.
made me feel sorry
D.
made me very happy
相關題目：
【單選題】The example of the cartoon book characters is taken in the passage to______.
A.
support the viewpoint that anger and hatred harm physical and mental health
B.
introduce a famous expert
C.
let the reader know the different colours of cartoon faces
D.
show how to control one’s temper
【單選題】The author of the passage tries to make his viewpoint clear ______.
A.
by raising his own examples
B.
based on his own experience
C.
by mentioning some studies
D.
by mentioning some typical patients
【單選題】From the passage, we can infer the man _____.
A.
was thankful for their kind act
B.
felt ashamed and slipped away
C.
was hungry and ate a lot of food
D.
was too proud to accept their offer
【單選題】The manager of the restaurant looked frightened because _____.
A.
the man was not friendly
B.
he had fired the man before
C.
the man had stolen something from the restaurant
D.
he was afraid the man wouldn’t afford to pay the food
【單選題】The phrase “made my day” in the last paragraph probably means ______.
A.
wasted my money
B.
moved me deeply
C.
made me feel sorry
D.
made me very happy
參考解析：
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