问题 选择题

对酒精灯的使用方法叙述错误的是(  )

A.绝对禁止向燃着的酒精灯添加酒精

B.绝对禁止用酒精灯去引燃另一支酒精灯

C.酒精灯不用时,必须盖上灯帽

D.酒精灯内酒精的体积不得超过容积的

1
3

答案

答案:D

题目分析:

选项A如果向点燃的酒精灯内添加酒精时,很容易使酒精和火焰接触,由于酒精具有可燃性,容易发生火灾,所以绝对禁止向燃着的酒精灯添加酒精;故本选项说法正确;
选项B如果用一酒精灯去引燃另一酒精灯时,由于酒精灯的灯芯是活动的,在倾斜的过程中容易洒落酒精,又因为一支酒精灯是燃烧着的,也容易发生火灾.所以绝对禁止用酒精灯去引燃另一支酒精灯;故本选项说法正确;选项C酒精灯帽有如下作用:一防止酒精挥发,造成浪费.二是防止酒精挥发后,灯芯上留有水分,再使用时难以点燃;故本选项说法正确;

选项D应该酒精灯内酒精的体积不得超过容积的,而不是,故本选项说法错误。故选:D

阅读理解

阅读理解。

      A man made a nice talk machine(机器). It could weigh people’s weight . The man wanted to try the

machine before he could make a lot of them. He put the machine into the waiting of a station. There were

a lot of people in and out.

The first one who used the machine was an Indian woman. She stood on the machine. The machine thought for a few seconds(秒) to decide which language to speak.

     "Good morning, madam,: it said in Indian, " Your weight is 72 kilos. That’s three kilos more. If you eat more fruit and vegetables, you’ll be soon all right . Please have a nice day."

The second one to use the machine was a Chinese girl. She stood on the machine and waited to hear her

weight.

     "Good morning, Miss,” The machine said in Chinese .Your weight is 45 kilos .It’s all right for your age and height. Go on to eat what you eat every day. Please have a nice day."

The third one to use the machine was a very fat American woman .She thought for a long time to stand on

the machine. The machine spoke highly in English, “ Good morning, Will one of you get off?”

1.What made the machine so special?

A. It could talk just like a man.

B. It could weigh people's weight.

C. It could know everyone.

D. A and B

2.What did the machine tell the Indian woman?

A. She was a little lighter

B. She was a little heavier

C. It couldn't speak Indian

D. To eat what she wanted to eat

3.How was the American woman?

A. She was healthy

B. She liked thinking

C. She was too heavy

D. The machine liked her

单项选择题