问题 选择题

当你突然发现家中煤气泄漏产生浓浓臭味时,你可能采取的下列措施,错误的是(  )

A.迅速打开排气扇排气

B.迅速关闭煤气的阀门

C.迅速打开窗户通风

D.迅速查找煤气泄漏的原因

答案

A、打开排气扇时可能会产生电火花,而煤气有可燃性,煤气泄漏后与空气混合,遇火可能引燃发生爆炸.故A错误;

B、煤气有可燃性,煤气泄漏后与空气混合,遇火可能引燃发生爆炸,迅速关闭煤气的阀门,达到防止爆炸的目的.故B正确;

C、迅速打开窗户通风可以降低煤气的浓度,达到防止爆炸的目的,故C正确;

D、迅速查找煤气泄漏的原因,防止二次泄露.故D正确.

故选A.

阅读理解

阅读短文,根据要求完成下面各小题。

     In Britain you are allowed to drive a car when you are seventeen. You have to get a special two-year driving

license before you can start. When you are learning, someone with a full license always has to be in the car with

you because you aren't allowed to drive the car on the road alone. You don't have to go to a driving school …a

friend can teach you. 3. The person with you isn't allowed to take the money for the lesson unless he's got a

teacher's license.

     Before you are allowed to have a full license, you have to take a driving test. You can take a test in your

own car, but it has to be fit for the road. In the test you have to drive round for about half an hour and then

answer a few questions. If you don't pass the test, you are allowed to take it again a few weeks later if you

want to. In 1970 a woman passed her fortieth test after 212 driving lessons. When you've passed your test, you

don't have to take it again, and you are allowed to go on driving as long as you like. 4. Britain's oldest driver

was a man who drove in 1974 at the age of 100.

     Before 1904 everyone was allowed to drive, even children. Then from 1904 car drivers had to have a license.

But they didn't have to take a test until 1935. On the early days of car driving, before 1878, cars weren't allowed

to go faster than four miles an hour, and someone had to lead the car with a red flag.

(一)根据短文内容简要回答问题。

1.Is a fifteen-year-old boy allowed to drive alone on the road?

___________________________________________________________

2.What do you have to do during the driving test?

___________________________________________________________

(二)将短文中划线的两个句子译成汉语。

3. ___________________________________________________________

4. ___________________________________________________________

(三)请给短文拟一个适当的标题。

5.___________________________________________________________

选择题