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问题 填空题

在标准状况下，2.24L氯气通入足量的石灰乳中，发生的化学反应方程式______，所得的漂白粉中有效成分为______，漂白粉置于空气中易失效的原因（用方程式表示）______，______．

答案

氯气通入足量的石灰乳中，可以制取漂白粉，

发生的化学反应方程式为：2Cl2+2Ca（OH）2=CaCl2+Ca（ClO）2+2H2O；其中的Ca（ClO）2是漂白粉中有效成分，漂白粉置于空气中易失效的原因是：Ca（ClO）2+CO2+H2O=2HClO+CaCO3↓；2HClO=2HCl+O2↑，

故答案为：2Cl2+2Ca（OH）2=CaCl2+Ca（ClO）2+2H2O；Ca（ClO）2；Ca（ClO）2+CO2+H2O=2HClO+CaCO3↓；2HClO

 光照 
.
 
2HCl+O2↑．

单项选择题 A1/A2型题

护士在为孕妇指导自我监护措施，告诉孕妇胎儿如果发生急性缺氧，早期的胎动特点是（）。

A.频繁

B.减弱

C.消失

D.不变

E.减少
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填空题

单词拼写。

     根据下列各句句意和空白之后的汉语提示词，在横线上写出对应单词的正确形式，

每空只写一词。

1. On the way to the station, he ___________(闲聊) about their trip.  

2. At school, they had learned that most Canadians live _______(在……范围内) a few hundred

    kilometers of the USA border.

3. Fruit juices can be ________(有害的) to children's teeth.  

4. Water had also appeared on other planets like Mars but ________(不像) the earth.

5. He has been working on a new _______(小说) recently.

6. Have you ever heard of the saying, 'A friend in need is a friend ________(真正地)'?  

7. It's your fault. Go and ___________(道歉) to her.  

8. He pushed against the rock with all his __________(力气).

9. It's the _______(习俗) in that country for women to marry young.  

10. For _______(显而易见的) reasons, I'd prefer not to give my name.  
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