试题与答案

现有3种化合物A、B、C均含短周期元素R,其转化关系如下图所示。 (1)若A由

题型:推断题

题目:

现有3种化合物A、B、C均含短周期元素R,其转化关系如下图所示。

(1)若A由第三周期2种元素组成。常温下,0.1 mol/L X 溶液的pH=13,则R在周期表中的位置是______,X中阴离子的电子式是________,B转化为C的离子方程式是____________________。

(2)若常温下A、B、C、X均为气态物质,1 mol A中含有共价键的数目约为1. 806×1024,X为单质,A与X 反应生成B的化学方程式是_________________;在 一定条件下,A与C反应可消除C对大气的污染,该反应的化学方程式是___________________。

答案:

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Several months later, I noticed her window was very dirty. Everything was not clear through the window. I wondered why the woman didn't wash her window.

One sunny morning, I decided to clean up my apartment, including washing my windows. Late in the afternoon when I finished the cleaning, I sat down for a rest by the window. What a surprise! The woman sitting by her window was clearly seen! Her window was clean! Suddenly, I realized I had made a mistake. I was watching her through my dirty window all the time!

That was quite an important lesson for me. Since then, whenever I wanted to judge (判断) someone, I asked myself first, "Am I looking at him through the dirty window of my heart? ”Then I try to clean the window of my own world so that I may see the world clearly.

小题1:The writer lived in _______years ago.

A.a hotel

B.a village

C.a town

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A.in the morning

B.in the afternoon

C.in the evening

D.the whole day小题3:One sunny morning, the writer decided to do some_______.

A.Reading

B.Cleaning

C.Shopping

D.cooking小题4:The writer was surprised to find the woman's window was_______

A.Far

B.Broken

C.Clean

D.dirty小题5:From the passage(文章), we can learn _______.

A.we should judge ourselves before we judge others

B.we should judge others through the dirty windows

C.we should clean others' windows first

D.we shouldn't clean the windows often

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