问题 填空题

下表是元素周期表前四周期的一部分,X、Y、Z、R、Q、W、J是7种元素的代号。回答下列问题时,涉及元素书写的请用相应的元素符号。

(1)J基态原子的核外电子排布式为            。基态Q2+中未成对电子数为     ;R和Y的简单离子与Na+三种离子的半径大小顺序为                   

(2)X、Y、Z三种元素电负性由大到小的排序是                     ;X与Y的第一电离能:X      Y(填“<”“>”或“=”),其理由是                  

(3)检验某溶液中是否含有Q3+的方法是                                  

(4)已知WX3是一种引爆剂,受撞击时分解为两种单质,则其化学方程式为       

                                                            

(5)化学家直到1971年利用XeZ2(Xe为氙)和含JY3的溶液反应才制得JY-4。反应中除生成JY-4外,还得到了Xe和一种弱酸。写出该离子反应方程式并标出电子转移方向和数目:                                            

答案

阅读理解

阅读理解

Section One

     The city is an accumulation (积累)of human civilization. Just as the American social philosopher

(哲学家) Lewis Mumford put it, it is a special system which, fine and compact(简洁的), has been

designed to preserve the fruits of human civilization. Many Western languages have developed their

versions of the term “civilization” from the same Latin (拉丁语的) word “civitas”(meaning “city”), and

it is by no means a coincidence(巧合). The city has played a significant role in the perfection of

order in human society.

Section Two

     The emblem, showing the image of three people  ? you, me, him/her holding hands together,

symbolizes the big family of mankind. Inspired by the shape of the Chinese character “世”

(meaning the world), the design conveys the organizers' wish to host an Expo which is of global

scale and which displays the various urban cultures of the world.

Section Three

     Created from the inspiration of Chinese character “人”, the design roots deeply in Chinese culture.

It tells the world the eternal core (永恒的核心) and theme of Shanghai World Expo will be always

human. The mascot(吉祥物) “Haibao” will become the messenger for the theme of

World Expo 2010 Shanghai China “Better City, Better Life”.

     The basic structure of the Chinese character “人” in which each stroke(一笔,一划) supports

each other also shows the concept that the beautiful life should depends on mutual-help. If the human

are willing to support one another, the harmony among human, nature, and society will be available.

Such an urban life will be nice.

     Haibao’s confident smile is expressing his sincere greeting from China ? “World Expo 2010

Shanghai China welcomes you!”

1. Section One mainly tells us about ______.

    A. the part cities play in human civilization  

    B. the development of the word “city”

    C. why the Expo is held in Shanghai  

    D. where human civilization originated

2. The underlined word “it” in Section One refers to ______.

    A. the civilization

    B. the philosopher

    C. the word

    D. the city

3. Which correctly matches the sections with the pictures described in the passage?

    

4. The second paragraph in Section Three explains how the creation is connected with the _____ of 

    the  Chinese word “人”.

    A. story   

    B. meaning

    C. shape   

    D. usage

单项选择题