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【多选题】
陶器和瓷器的区别有（）A.
原料不同
B.
表面颜色不同
C.
烧制工艺不同
D.
硬度不同
E.
用途不同
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举一反三
【简答题】O. Henry s______is a very moving story of a young couple who sell their best possessions in order to get money for a Christmas present for each other.
【单选题】听力原文： Every couple who goes to the altar believes that they will make that trip only once in their lives. They want the day to be perfect, and they are asking for much more than good weather. Whey wan...
A.
The budgets of weddings.
B.
The business of weddings.
C.
The planning and execution of weddings.
D.
The high wedding expenses.
【单选题】听力原文：The reality is that the level of distress here definitely knocked down a couple of notches today. Stocks ended slightly higher, investors paid little attention to a worse-thah-expected inflation ...
A.
The capital market could spread to other sectors of the economy.
B.
The stock market could spread to other sectors of the economy.
C.
The sub prime mortgage market could spread to other sectors of the economy.
D.
The future market could spread to other sectors of the economy.
【简答题】简述最小项具有的性质。
【简答题】填写反应发生的试剂和条件
【单选题】The young couple was worried,because neither of them was aware ______ they had lost the necklace.
A.
of the place
B.
of which
C.
where
D.
of where
【简答题】真值表的最小项具有哪些性质?
【简答题】某校化学小组的同学用如图装置对铜与浓硫酸在一定条件下的反应进行实验探究，请回答： （1）写出A试管中发生反应的化学方程式______；若有1摩铜完全反应，则被还原的H 2 SO 4 的物质的量为______． （2）请填写表中空白： B中棉花的位置 ① ② ③ 所蘸试剂 滴有酚酞的NaOH试液 品红溶液 淀粉和碘水混合液 现象 ______ ______ ______ 体现SO 2 的性质 ___...
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