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【单选题】
由C、H、N三种元素组成的物质最可能是下列哪类成分。( )A.
黄酮
B.
生物碱
C.
醌类
D.
结 晶
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反馈参考答案：
举一反三
【判断题】Organizational structures should be shaped and implemented for the primary purpose of facilitating the achievement of oraganizational goals in a efficient manner.
A.
正确
B.
错误
【单选题】According to the manner of articulation, [f] is a ___________.
A.
fricative
B.
labiodental
C.
affricate
D.
stop
【简答题】( O ) structures should be shaped and implemented for the primary purpose of facilitating the achievement of organizational goals in an efficient manner.
【简答题】Tu pourras connaître mon ami ________ est étudiant.
【单选题】The primary digestive function of the throat and esophagus is ______ swallowed materials from the mouth to the stomach.
A.
to transport
B.
transported
C.
for transportation
D.
that transported
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