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【简答题】
ZL102属于____铝合金。
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【简答题】Poverty can help breed 2._________—Al-Qaida is a growing concern for the Yemenis.
【简答题】In Sanna, fears of an Al-Qaida attack led to temporary closures this week of the American, British and French 4.________.
【单选题】The goods are packed in cartons innerlined with material.
A.
water-proved
B.
water-protected
C.
water-proof
D.
water-tight
【单选题】The goods are packed in cartons interlined with material.
A.
water-proved
B.
water-protected
C.
water-proof
D.
water-tight
【单选题】Can we use this material for the decoration of the exhibition hall?
A.
Yes. Any available material will do for this job
B.
Yes. Water-proof material for the decoration of the hall will be used for the interior decoration
C.
No. Fire-proof materials should be used for the interior decoration
D.
No. Only highly-cost materials should be used for the interior decoration
【简答题】The report says Al-Qaida operates from the safety of Pakistan’s tribal areas on the border with 5.___________.
【单选题】下列关于有机物结构特点的说法正确的是：
A.
球棍模型是按照有机物的真实构型按比例放大得到的
B.
所有的有机物都存在同分异构体
C.
化学式符合C n H 2n+2 的有机物都是烷烃
D.
甲烷分子中的四个键角是相同的，但是四条共价键的键长是不同的
【单选题】Because the newly-developed material has proved to be proof against water and dust, _____ it sells well.
A.
so
B.
and
C.
/
D.
that
【单选题】It can be inferred from the passage that American childrens books sold before 1785 were almost always ______.
A.
written by Maria Edgeworth
B.
attractive and interesting to children
C.
written by American authors
D.
intended only for religious and moral instruction
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