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【单选题】
具有下面化学结构的药物是A.
磺胺嘧啶
B.
磺胺甲噁唑
C.
磺胺异噁唑
D.
甲氧苄啶
E.
磺胺多
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举一反三
【单选题】I wonder _______ there are so many natural disasters across the world in 2010.
A.
why is it
B.
it is why that
C.
why is it that
D.
why it is that
【单选题】I wonder why he ______ to discuss the problem at the meeting.
A.
declined
B.
rejected
C.
refused
D.
delayed
【单选题】I wonder why he______to discuss the problem at the meeting.
A.
declined
B.
rejected
C.
refused
D.
A／C
【单选题】I wonder _____ there are so many natural disasters across the world. [ ]
A.
why is it that
B.
what is it that
C.
what it is that
D.
why it is that
【单选题】－I wonder ____________. －Zebras.
A.
what do they call these animals
B.
why they call these animals
C.
What they call these animals
D.
why do they call these animals
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