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【单选题】
某烃分子中有一个环和两个，它的分子式可能是A.
C 7 H 8
B.
C 4 H 6
C.
C 5 H 6
D.
C 2 H 4
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举一反三
【简答题】A.They have been hospitalizeded. B.They have got skin problems. C.They were choked by the thick smoke. D.They were poisoned by the burning chemical.
【单选题】They have been gathering this year's crop. They have been ____.
A.
assembling it
B.
picking it up
C.
collecting it
D.
bringing it in
【单选题】They have been writers and actors, entertainers and creators. They have won Academy Awards and received critical acclaim. They have graced the covers of magazines. In the arts and entertainment world,...
A.
the change of women's life style. in the history
B.
women's struggle for independence in the history
C.
female celebrities'contributions to the world
D.
the private stories and legacies of female celebrities
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