问题 选择题

下列事故处理方法,不正确的是

A.电器着火,立即用水扑灭

B.炒菜时油锅着火,立即盖上锅盖

C.厨房煤气管道漏气,立即关闭阀门并开窗通风

D.图书馆内图书着火,用液态二氧化碳灭火器扑灭

答案

答案:A

题目分析:根据安全常识进行分析判断。

A、电器着火时,直接用水灭火会引起触电,应先关闭电源,错误;

B、炒菜时油锅着火,立即盖上锅盖,可以隔绝氧气或空气,从而达到灭火的目的,正确;

C、煤气是易燃易爆物,接触明火或电火花等,有可能会爆炸,如果漏气应立即关闭阀门并开窗通风,这样能使室内空气对流,可以降低气体的温度,减小可燃性气体的浓度,使混合气体达不到着火点和爆炸极限,正确;

D、液态二氧化碳灭火器在灭火时不会留下任何痕迹而使物体损坏,故能有效保护书籍,正确。故选A

点评:关注生命安全是当今社会的热点,也是化学考查的重点,所以在平时的学习过程中,要注意积累相关方面的知识,特别是生产、生活中易燃易爆物的安全问题等。

阅读理解

阅读理解。

    "Mr. Mott often forgets important meetings. The robot will go after him all the time. It listens to everything

he says. It sees everything he does. At night, it watches him sleep. It knows everything about Mr. Mott…"

     It sounds like a wonderful idea, doesn't it? But I'm afraid that Mr. Mott will not get on well with the robot,

because everyone has something he doesn't want others know. It is privacy. Just imagine that there is a video

camera around you all day. How do you feel? When you are taking an exam, a teacher sits in front of you and

watches you all the time. How do you feel?

     Mr. Mott doesn't lose all his memory. At least he remembers that he always forgets. So why can't he do

something for this HIMSELF? He can keep a notebook with him, like most people do. In the notebook he can

write down the things he should do, the persons he should meet and the places he should go.

     Isn't the notebook much cheaper and safer than the robot?

1. "It" in the first paragraph (段落) refers to _____. [ ]

A. Mr. Mott

B. Mrs. Mott

C. the robot

D. a video camera

2. Why does the writer think Mr. Mott will not always get on well with the robot? [ ]

A. Because it is invented by others.

B. Because it can talk with Mr. Mott.

C. Because it can remind (提示;提醒) Mr. Mott of something he forgets.

D. Because it knows something Mr. Mott doesn't want others know.

3. The underlined word "privacy" means _____ in Chinese. [ ]

A. 提供

B. 丧失

C. 特权

D. 隐私

4. Mr. Mott is _____. [ ]

A. handsome

B. forgetful

C. a scientist

D. kind and friendly

选择题