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【单选题】
下列各组物质, 属于同分异构体的是A.
丁醇和乙醚
B.
丙醛和丙醇
C.
丙醇和甘油
D.
乙烯和丁二烯
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举一反三
【单选题】After five hours' drive, they reached they thought was the place they had been dreaming of
A.
that
B.
what
C.
which
D.
where
【单选题】After sailing for five months, they arrived at they thought was the place they had been looking for.
A.
what
B.
that
C.
which
D.
where
【简答题】A．Because they thought he was still in China. B．Because they thought be was put into prison. C．Because they thought he was working for the Chinese government. D．Because they thought he was dead.
【简答题】A．They thought milk had great healing power. B．They thought milk could make their skin paler. C．They thought milk could stop beards growing. D．They rubbed bread soaked in milk on their faces.
【单选题】设二叉排序树中关键字由1~1 000的整数构成，现要查找关键字为363的结点，下列关键字序列不可能是在二叉排序树上查找到的序列是( )。
A.
2，252，401，398，330，344，397，363
B.
924，220，911，244，898，258，362，363
C.
925，202，911，240，912，245，363
D.
2，399，387，219，266，382，381，278，363
【单选题】After five hours' drive, they reached _____ they thought was the best place they they'd been dreaming of. [ ]
A.
that
B.
where
C.
which
D.
what
【简答题】C#中是否有下列关键字?
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