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【简答题】
村民委员会决定问题,采取_____原则。
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举一反三
【单选题】—Can you tell me where he is? —Sorry, _____. [     ]
A.
I can
B.
I don't know
C.
I know
D.
I don't
【简答题】环氧丙烷经开环聚合后,可得到不同立构的聚合物(无规、全同、间同),试写出它们的立构的不同,并大致预计它们对聚合物性能各带来怎样的影响?
【简答题】环氧丙烷经开环聚合后,可得到不同立构的聚合物(无规、全同、间同),试写出它们的不同立构体,并大致预计它们对聚合物性能会带来怎样的影响。
【简答题】环氧丙烷经开环聚合后,可得到不同立构的聚合物(无规、全同、间同),试写出它们的立构上的不同,并大致预计它们对聚合物性能各带来怎样的影响?
【单选题】I really don’t know ___ ___I kept the secret papers.
A.
where was it
B.
it was where that
C.
where it was that
D.
where was it that
【简答题】环氧丙烷经开环聚合后,可得到不同立构的聚合物(无规、全同、间同),试写出它们的立构上的不同,并大致预计它们对聚合物性能各带来怎样的影响?
【单选题】-Where are the English books? -Sorry, ___. [     ]
A.
I know
B.
I don’t know
C.
it isn’t
D.
they’re not
【简答题】-Where are the English books?    ---Sorry, ___. A I know     B I don’t know    C it isn’t    D they’re not
【单选题】----- I can’t find my book , and I don’t know __________? ----- Is it in you bag?
A.
where did I put it     
B.
What did I put them    
C.
where I put it
【单选题】I really don’t know ________ I put my wallet after I paid the bill.
A.
where was it
B.
it was where that
C.
where it was that
D.
where was it that
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