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【单选题】
下列官能团按被还原的活性由大到小排列，哪正确的顺序（）A.
酰胺>醛>酮>酰卤
B.
酰卤>醛>酮>酰胺
C.
酰卤>酰胺>醛>酮
D.
醛>酮>酰卤>酰胺
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举一反三
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A.
chickens and pears
B.
chickens and pear
C.
chicken and pear
D.
chicken and pears
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【单选题】The hyponyms of ‘vegetable’ are()
A.
banana, pear, jam
B.
pear, apple, banana
C.
cucumber, celery, peas
D.
tree, pine, elm
【简答题】rounder
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