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

1.The boy left the room with_________(眼泪) in his eyes.

2.It's________(浪费) to throw away glass, paper and metal.

3.Tony sits_________(在……之间) Lucy and Lily.

4.You'd better speak_______(大声). I can't hear a word from the back.

5.Tom will hear from his parents this__________(星期二）。

6.My English teacher always________(鼓励) me to speak more English in class.

7.My daughter is looking forward to___________(收集) more stamps.

March 16 is World Sleep Day. This year’s slogan is “Breathe Easily, Sleep Well”. Its aim is to celebrate the *benefits of good and healthy sleep.

Fangfang, from Liaoning, just became a high school student last September. She gets up at 5:30 a.m. every day and goes to bed at about midnight. Fangfang feels sleepy all the time. “I want to finish all my homework first,” she said.

Sleep is like food for the brain. Enough sleep helps the body and brain grow and develop. According to the National Sleep *Foundation in the US, adults need seven to nine hours of sleep every night. For students who are 10 to 17 years old, a healthy amount is about eight to nine hours every night.

But many students don’t get enough sleep because of early school start time and heavy homework. About 80 percent of middle school students don’t get enough sleep, the China Youth and Children Research Center reported. For some students, they want to sleep early, but they keep worrying about their schoolwork and can’t fall asleep quickly. For others,they may even have insomnia, and usually they have to ask the doctors for help.

These sleeping problems greatly *affect people’s life. Some doctors found out that *lack of sleep for teenagers lead to poor grades. Students without enough sleep cannot pay attention in class or do well in sports. Also, they often become anxious easily.

Luckily, with good sleep habits, it is easier to fall asleep. Some of these good habits include *avoiding drinks that make people excited late in the day, going to sleep at the same time every night, and sleeping in a comfortable place that is dark, quiet, and neither too warm nor too cold.

More tips to get a good night’s sleep:

Exercising during the day. You’d better do sports three hours before going to bed.

Don’t eat big meals before bedtime. Drink a warm glass of milk.

If you stay awake worrying about things, try making a list of things that you need to do before you go to bed.

1.How much sleep do students aged from 10 to 17 need every night? 

A．7 hours.          B．8-9 hours.         C．10-12 hours       D．Less than 7 hours.

2.What does the word “insomnia” mean in Paragraph 4?

A．失眠症.           B．好动症.           C．咽喉炎.           D．关节炎.

3.If teenagers don’t get enough sleep, they may _____________. 

A．do well in sports                        B．grow and develop better

C．feel sleepy in class                      D．do much better in studies

4.Which of the following is a good sleeping habit according to the passage?  

A．Do exercise at night before going to bed.

B．Going to sleep at the same time every night.

C．Going to sleep in a place where it is bright.

D．Eat big meals or drink a lot of wine at night.

5.What is the main idea of the passage?   

A．People should sleep well to live healthy and study better.

B．Teenagers should sleep longer on Saturdays and Sundays.

C．People should see the doctor if they don’t have enough sleep.

D．Teenagers don’t get enough sleep because of heavy homework.

It was the first day of biology class. The teacher wanted to give a good 41  to his class. He wanted to 42  his students’ eyes to the world of biology.

He knew that 43   young students was not easy, so he worked 44  and tried to find a good way to teach this class. 45  thinking for a long time, he made a 46  at last. He decided to show the kids something 47  and teach them a lesson at the same time.

He asked his students to 48  carefully. Then he began. He put a worm(虫子) into a glass of water. The worm 49  around in the water. Then he put a second worm into a glass full of alcohol(酒精). It died at once. He asked the students if anyone knew about 50  they learned from it. A boy said, “You showed us that if we drink alcohol we won’t have worms.”