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【单选题】
有机物的结构可用“键线式”表示，如：CH 3 -CH＝CH-CH 3 可简写为 ．有机物X的键线式为 ，下列说法不正确的是 [ ]A.
X的化学式为C 8 H 8
B.
有机物Y是X的同分异构体，且属于芳香烃，则Y的结构
C.
X能使酸性高锰酸钾溶液褪色
D.
X与足量的H 2 在一定条件下反应可生成环状的饱和烃Z，Z的一氯代物有4种
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【单选题】While you are having exam, you must write as _____ as you can
A.
careful
B.
carefully
C.
more careful
D.
more carefully
【判断题】托收方式下汇票的“收款人”栏目空白。( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
正确
B.
错误
【单选题】If you are having problems with a difficult boss, first of all you need to talk to her. She may not know you are having trouble. By 【B1】 such a meeting while 【B2】 your feelings, you could be come acro...
A.
postponing
B.
interrupting
C.
wiping
D.
obtaining
【单选题】While you are having breakfast, you'd better drink milk or orange juice ___ tea or coffee.
A.
not
B.
instead
C.
instead of
D.
but
【简答题】按照马克思的利息理论,利息不能自行被创造出来,利息来源于 的一部分。
【单选题】while you are doing your homework can only distract you.
A.
Ate
B.
Eating
C.
Eat
D.
Having eaten
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