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【单选题】
下列化合物不能使高锰酸钾溶液的紫红色褪色的是A.
4-甲基-2-戊炔
B.
3-甲基-2-
C.
环己烯
D.
甲基环己烯
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A.
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B.
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D.
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【单选题】Lightly ______ into the meeting room.
A.
the lady walked
B.
walked the lady
C.
did the lady walked
D.
walks the lady
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