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【单选题】
下面基团是邻对位定位又是钝化苯环的是A.
(1) (2)
B.
(1) (3)
C.
(2) (3)
D.
(1) (4)
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举一反三
【单选题】I need to write down what he says. Could you give me some _______?
A.
paper
B.
planes
C.
pets
【单选题】When someone says “Could you tell me how to keep fit?”, you may say_________.
A.
I suggest you go on a diet.
B.
You should eat less greasy food.
C.
Follow my advice and take more exercise.
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