用如图所示装置进行下列实验，实验结果与预测的现象不一致的是 _爱下问搜题

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问题选择题

用如图所示装置进行下列实验，实验结果与预测的现象不一致的是

	①中的物质	②中的物质	预测①的现象
A	KI溶液	浓硝酸	溶液变蓝色
B	酚酞溶液	浓氨水	无色变红色
C	NaAlO₂溶液	浓盐酸	有白色沉淀
D	湿润红布条	饱和氯水	红布条褪色

答案

答案：A

题目分析：A浓硝酸有挥发性，挥发出的硝酸溶解在KI溶液中，因它有强的氧化性，将碘离子先氧化为I₂,继而再继续氧化为更高的价态，而失去碘水的黄色。故错误。B浓氨水挥发的氨气融入酚酞试液中与水作用得到弱碱-一水合，氨使酚酞变红。正确。C浓盐酸挥发溶解在偏铝酸钠溶液中，与其作用产生氢氧化铝白色沉淀和氯化钠。正确。D饱和氯水挥发的氯气遇湿润红布条时，氯气与水反应产生具有漂白性的次氯酸，而使色布褪色。正确。

完形填空

One night, a young school teacher had a dream．In his dream, an angel appeared and said to him, "You will be given a child who will grow up to become a world 26 ．How will you prepare him so that he will realize his 27 , grow in confidence, be open-minded, and strong in character? In short, what kind of 28 will you provide so that he can become one of the truly 29 leaders?"
The young teacher 30 in a cold sweat．It had never 31 to him before --- any one of his present or future students could be the person 32 in his dream．Was he preparing them to 33 to any position which they want? He thought, "How might my 34 change if I knew that one of my students was this person?" He 35 began to develop a plan in his mind．
His teaching 36．Every young person who walked through his 37 became, for him, a future world leader．He saw each one, not as they were, but as they could be．He 38 the best from his students, yet tempered （使缓和） it with compassion （同情）．He taught each one 39 the future of the world depended on his instruction．
After many years, a man he taught rose to a 40 of world prominence （著名）．Of all the various teachers in his life, he was the 41 ．
Children are 42 messages we send to a time and place we will never see．Believe that one child’s 43 may depend upon influence only you can provide, and something remarkable will 44 ．For no young person will ever be 45 to you again．And you will never be the same．

A．businessman

A．intelligence

A．nationality

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