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如图所示，试剂瓶中分别盛有四种常见的化学药品．

（ 1 ） C 瓶中药品的化学式为______，它的一种用途是______； D 瓶中药品的名称是______．

（ 2 ）利用图中所示的药品，按下列要求写出反应的化学方程式．

①实验室制取氧气：______

②选用一种药品与稀盐酸反应：______

③工业上用D来冶炼A的反应：______．

答案

（ 1 ）C瓶中药品的化学式为CaCO3，它的一种用途是实验室用它和稀盐酸反应制取二氧化碳气体（或工业上煅烧制生石灰等，其他合理均可）；D瓶中药品的名称是氧化铁．

（ 2 ）利用图中所示的药品，按下列要求写出反应的化学方程式．

①实验室制取氧气：已知反应物、反应条件、生成物，则：2KMnO4

  △  
.
 
K2MnO4+MnO2+O2↑

②选用一种药品与稀盐酸反应：已知反应物、反应条件、生成物，则：Fe+2HCl═FeCl2+H2↑（或CaCO3+2HCl═CaCl2+H2O+CO2↑等）；

③工业上用D来冶炼A的反应：已知反应物、反应条件、生成物，则：Fe2O3+3CO

 高温 
.
 
2Fe+3CO2

故答为：（1）CaCO3，实验室用它和稀盐酸反应制取二氧化碳气体（或工业上煅烧制生石灰等合理均可）； 氧化铁．

（2）①2KMnO4

  △  
.
 
K2MnO4+MnO2+O2↑；

②Fe+2HCl═FeCl2+H2↑（或CaCO3+2HCl═CaCl2+H2O+CO2↑等）；

③Fe2O3+3CO

 高温 
.
 
2Fe+3CO2

连线题

把能搭配的词语连起来，再读一读。

蓝蓝的    说

高高的    吹

轻轻地    天

悄悄地    楼

懂    电视

讲    游戏

看    礼貌

打    故事
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阅读理解
阅读理解。
     下面文章中有5处(第1-5题)需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出适合各段意思的小标题，选项中有一项是多余选项。
A.  Manufacturing industry in information economy
B.  News in the age of information
C.  Argument about individual accounts and their reliability
D.  Be your own investigative journalist
E.  Don't believe everything you read in the newspapers.
F.  Information is presented in an entertaining way.
1. _______
     With the arrival of the age of "information economy", intellectual work is becoming a more important
source of wealth than manufacturing.Organizations in all walks of life are doing more to spread their
information. So people of the Public Relations are hired to speak for them. A lot of our news is actually
collected from press releases and reports of events intentionally staged for journalists. In the information
age, journalists spend their time, not investigating, but passing on the words of a spokesperson.
2. _______
     There is a joke in the novel Scoop about the newspaper's owner, Lord Copper. The editors can
never disagree with him. When he's right about something they answer "definitely", and when he's wrong
they say "to some extent, Lord Copper." It seems reasonable to suppose that, in the real world, the
opinions of such powerful people still influence the journalists and editors who work for them.
3. _______
     In countries where the news is not officially controlled, it may be provided by commercial
organizations who depend on advertising. The news has to attract viewers and maintain its audience
ratings. I suspect that some stories get air-time just because there happen to be exciting pictures to show.
In Britain, we have the tabloid newspapers which millions of people read simply for entertainment. There
is progressively less room for historical background, or statistics, which are harder to present as a
sensational story.
4. _______
     There is an argument that with spreading access to the internet and cheap technology for recording
sound and images we will all be able to find exactly the information we want. People around the world
will be able to publish their own eye-witness accounts and compete with the widely-accepted
news-gatherers on equal terms .But what it will mean also is that we'll be subjected to a still greater
amount of nonsense and lies. Any web log may contain the latest information of the year, or equally, a
made-up story that you will never be able to check.
5. _______
     Maybe the time has come to do something about it, and I don't just mean changing your choice of TV
channel or newspaper. In a world where everyone wants you to listen to their version, you only have two
choices: switch off altogether or start looking for sources you can trust. The investigative journalist of the
future is everyone who wants to know the truth.
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