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【单选题】
用下列实验装置进行的实验中, 能达到相应实验目的的是 ( ) 。A.
装置甲：防止铁钉生锈
B.
装置乙：除去乙烯中混有的乙炔
C.
装置丙：实验室制取乙酸乙酯
D.
装置丁：验证HCl气体在水中的溶解性
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举一反三
【简答题】What is most people’s attitude toward life according to the excerpts?
【单选题】本币贬值时,下列说法错误的是
A.
进口额总是减少的。
B.
出口额总是增加的。
C.
出口额的净变化要考虑出口的数量效应和价格效应。
D.
国际收支的净变化是出口额与进口额的变化之和。
【单选题】如果本币贬值,贬值后的一段时期内,下列哪一项说法是错误的
A.
国际收支顺差。
B.
国外对我国商品的需求上升，使得总需求上升。
C.
总需求上升，导致产出的均衡水平上升。
D.
国内价格水平上升，直到国内价格水平上升至新的购买力平价点，经济又回到均衡状态。
【简答题】根据五行相生规律所确定的治则是什么?治法是什么?
【单选题】What is the present situation of sociologists’ study on news travel in people’s life?
A.
Their theory about people who are likely to receive news needs to be developed.
B.
They have failed to discover the type of news which spreads faster than others.
C.
They have just worked out a perfect theory of who enjoys sharing news with others.
D.
They expect to find out what kind of news is the most popular in social network.
【简答题】听力原文： Marriage has been an important part of people’s life from the early times. Most American marriages nowadays, especially first marriages involving young couples, are the result of mutual affectio...
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