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问题 单项选择题

高热是指体温在（）

A．37.3℃～38℃

B．38.1℃～39℃

C．39.1℃～41℃

D．41℃以上

答案

参考答案：C

解析：

根据体温升高程度不同，分为以下几个等级。低热37.3℃～38℃。中等度热38.1℃～39℃。高热39.1℃～41℃。超高热41℃以上。

阅读理解

In the early 1990s the word “Internet” was strange to most people. But today, Internet has become a useful tool for people all over the world. Maybe Internet has been the greatest invention in the field of communication in the history of mankind. Communicating with others on the Internet is much faster. We can chat with a person who is sitting in the other part of the world. We can e-mail our friends and they can read the e-mails within a minute.

Giving all kinds of information is probably the biggest advantage of the Internet. We can use search engines to find the information we need. Just type in a keyword or keywords and the search engine will give us a list of suitable websites to look at.

We can enjoy a lot on the Internet by downloading games, visiting chat rooms or surfing(浏览)websites. There are some games for free. We can meet new and interesting people in the chat now. We can also listen to music and see films.

Now, there is a lot of service on the Internet such as online banking, job finding and ticket buying. We can also do shopping and find nearly all kinds of goods. Sometimes we can find something that is quite good but very cheap.

小题1:How many main advantages of the Internet are talked about in the last passage?

A．Three.

B．Four.

C．Five.

D．Six.小题2:Which of the following is not right according to the passage?

A．We can find almost anything we want to know on the Internet.

B．Some games on the Internet are free.

C．We can buy most things we need on the Internet.

D．Goods on the Internet are more expensive than those in real shops.小题3:Which title best gives the main idea of the passage?

A．Online Shopping

B．Exchanging Information on the Internet

C．The Advantages of the Internet

D．Surfing the Websites on the Internet
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实验题

为探究Cl2、漂白粉的制备及有关性质，某兴趣小组设计并进行了以下实验探究。请回答以下问题：

（1）实验室拟用下列装置制备干燥纯净的氯气，请按照气体从左向右流动的方向将仪器进行连接：H→_______、_______→_______、_______→_______；其中广口瓶Ⅱ中的试剂为_______。

    

（2）写出工业上用氯气和石灰乳制取漂白粉的化学反应方程式_______；

（3）实验室有一瓶密封不严的漂白粉样品，其中肯定存在CaCl2。请设计实验，探究该样品中除CaCl2外还含有的其他固体物质。

①提出合理假设。

假设1：该漂白粉未变质，还含有Ca(ClO)2

假设2：该漂白粉全部变质，还含有______；

假设3：该漂白粉部分变质，还含有Ca(ClO)2和CaCO3。

②设计实验方案，进行实验。请在下表中写出实验步骤、预期现象和结论。

限选用的仪器和药品：试管、滴管、带导管的单孔塞、蒸馏水、自来水、品红溶液、1 mol·L-1 HCl溶液、新制澄清石灰水。（提示：不必检验Ca2+和Cl-。）

 实验步骤预期现象与结论
步骤1取少量上述漂白粉于试管中，先加入     溶解后，再把生成的气体通入     。若       ，则假设1成立；

若       ，则假设2或假设3成立。

步骤2已确定漂白粉变质，则另取少量上述漂白粉于试管中，先加入适量1 mol·L-1 HCl溶液，再加入    。若       ，则假设2成立；

若       ，则假设3成立。

 
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