One day, a teacher was giving a speech to his students .He held up（举起）a glass of water and

One day, a teacher was giving a speech to his students .He held up（举起）a glass of water and asked the class. How heavy do you think this glass of water is ?
The students’ answers ranged（范围） from 20g to 500g .
It does not matter on the weight itself .It depends on how long you hold it .If I hold it for a minute ,it is OK. If I hold it for an hour ,I will have an ache in my right arm .If I hold it for a day ,you will have to call an ambulance（救护车）.It is exactly the same weight ,but the longer I hold it ,the heavier it becomes.
If we carry our burdens （负担）all the time, sooner or later ,we will not be able to carry on ,the burden becoming increasingly heavier .
What you have to do is to put the glass down ,rest for a while before holding it up again .
We have to put down the burden sometimes ,so that we can be refreshed and are able to carry on .
So before you return home from work tonight ,put the burden of work down .Don’t carry it back home. You can pick it up tomorrow .
Whatever burdens you are having now on your shoulders, let it down for a moment if you can .
【小题1】The teacher brought a glass of water to the class because
A. he was very thirsty B. his arms were strong C. it was a good example
【小题2】A glass of water in this passage referred to （指）
A. knowledge B. the burden C .the time
【小题3】Accordign to the teacher ,you may feel if you put down the burden sometimes.
A. more energetic B. much heavier C. more stressed out （压力、紧张）
【小题4】This was a lesson about
A. how to relax oneself in life B. how to solve a physics problem .
C. how to keep fit by drinking water
【小题5】Which of the following statements is TRUE according to the passage ?
A .You could become heavier and heavier if you held a glass of water in your hand .
B. All the students in the class knew what the weight of the glass of water exactly was
C. The teacher had a good way of making his lesson clear and easy to be understood C

(答案→)C 解析：【小题1】联系下文描述,可知老师主要是想用这个举一个例子来说明道理,故选C.【小题2】根据下文答语The students’ answers ranged（范围） from 20g to 500g ,可知指的是负担,故选B,负担.【小题3】根据We have to put down the burden sometimes ,so that we can be refreshed and are able to carry on .描述,可知如果我们有时放下负担,我们会变得更有活力.选A.【小题4】通过阅读短文可知,这篇短文主要是来告诉我们应该如何放松自己,故选A,生活中如何放松自己.【小题5】这位老师用一杯水来举例说明了很轻的一个东西,如果长时间举着就会变得越来越重.进而说明了生活中的压力也是一样.故选C,这位老师有很好的方法来让他的课堂生动易懂.

这个答案应该是对的