A teacher began his class by holding up a glass with some water in it.  He held it up for all to see, and asked the students, " How much do you think this glass weighs?"

"50 g!" "100 g!" "125 g!" the students answered.

        "I really don't know unless I weigh it," said the teacher, "but my question is what would happen if I held it up like this for a few minutes?"

" Nothing! " the students said.

"OK. What would happen if I held it up like this for an hour?" the teacher asked.

"Your arm would begin to ache," said one of the students.

"You're right.  Now, what would happen if I held it for a day?"

"Your arm could go numb. Have to go to hospital for sure!" said another student. All the students laughed.

"Very good. But during all this, did the weight of the glass change?" asked the teacher.

"No." the students said.

"Then what caused the arm ache and the muscle (肌肉) stress?"

The students fell silent for a moment.

"Put the glass down!" said one of the students.

"Exactly!" said the teacher. "The problems of life are something like this. Hold them for a few minutes in your head, and it seems OK. Think of them for a long time and they begin to make you ache. Hold them even longer and you will not be able to do anything. It's important to think of the  challenges(挑战)  in your life, but it' s even more important to put them down at the end of every day before you go to sleep. That way, you are not stressed. You wake up fresh and strong and can deal with any challenge that comes your way!"

Remember to put the glass down today.

1. How much do you think this glass which was held by the teacher weighs?

A.50g     B.125g       C.I don’t know.    D.100g

2.What would happen if the teacher held the glass up like this for an hour?

A. One of the students thought his arm could go numb.

B. One of the students thought his arm would begin to ache.

C. One of the students thought his arm would be changed.

D. One of the students thought his arm would be lost.

3. Why did the teacher hold up a glass in his class?

A. Because he wanted to know how much the glass weighs.

B. Because he wanted to ask some student to weigh the glass.

C. Because he wanted to make his class more interesting.

D. Because he wanted to explain it was important to put the challenges in life down at the end of every day.

4. In this passage, the underlined words "go numb" means_______.

A．疼痛不止                  B．消瘦萎缩                   C．松弛下垂         D．失去感觉

5. According to the passage, which of the following is TRUE?

A. The teacher told his students to face the challenges bravely.

B. The teacher taught his students how to deal with the problems.

C. The teacher used to begin his class with a glass of water.

D. The teacher usually begins his class by holding a glass of water.

A teacher began his class by holding up a glass with some water in it.  He held it up for all to see, and asked the students, " How much do you think this glass weighs?"

"50 g!" "100 g!" "125 g!" the students answered.

        "I really don't know unless I weigh it," said the teacher, "but my question is what would happen if I held it up like this for a few minutes?"

" Nothing! " the students said.

"OK. What would happen if I held it up like this for an hour?" the teacher asked.

"Your arm would begin to ache," said one of the students.

"You're right.  Now, what would happen if I held it for a day?"

"Your arm could go numb. Have to go to hospital for sure!" said another student. All the students laughed.

"Very good. But during all this, did the weight of the glass change?" asked the teacher.

"No." the students said.

"Then what caused the arm ache and the muscle (肌肉) stress?"

The students fell silent for a moment.

"Put the glass down!" said one of the students.

"Exactly!" said the teacher. "The problems of life are something like this. Hold them for a few minutes in your head, and it seems OK. Think of them for a long time and they begin to make you ache. Hold them even longer and you will not be able to do anything. It's important to think of the  challenges(挑战)  in your life, but it' s even more important to put them down at the end of every day before you go to sleep. That way, you are not stressed. You wake up fresh and strong and can deal with any challenge that comes your way!"

Remember to put the glass down today.

49. Why did the teacher hold up a glass in his class?

     A. Because he wanted to know how much the glass weighs.

     B. Because he wanted to ask some student to weigh the glass.

     C. Because he wanted to make his class more interesting.

     D. Because he wanted to ask his students a lot of questions.

50. In this passage, the underlined words "go numb" means_______.

     A．疼痛不止                  B．消瘦萎缩             C．松弛下垂    D．失去感觉

51. According to the passage, which of the following is TRUE?

     A. The teacher told his students to face the challenges bravely.

     B. The teacher taught his students how to deal with the problems.

     C. The teacher used to begin his class with a glass of water.

     D. The teacher usually begins his class by holding a glass of water.

A study finds that not enough morning light causes teenagers not to get enough sleep at night. “As teenagers spend more time indoors, they miss necessary morning light. Day light is needed to keep the balance of the body’s 24-hour biological system (生物系统), which regulates (调节) body temperature and sleep styles,” reports Dr. Mariana Figueiro. “These teenagers who receive little morning light are going to bed later, getting less sleep and doing badly in tests. They are more likely to fail in their exams.”
In the study, Dr. Figueiro asked 11 students in Grade 8 to wear special glasses to prevent blue morning light from reaching their eyes. At the end of the 5-day study she found that they fell asleep 30 minutes later than usual.
Throughout her research, Dr. Figueiro has been very worried about teenagers going to bed too late. The problem is that today’s schools require teenagers to be in school very early in the morning. These students are likely to miss the morning light because they often go to school before the sun is up or as it’s just rising.
Furthermore (此外), the schools are not likely to provide enough electric light to keep the balance of this biological system. Our biological system is much more sensitive (敏感的) to blue light. Therefore, having lots of light in the classroom does not make sure that there is enough light to keep our biological system balanced.

1. 1.

   Which of the following is the result of the study?

   1. A.
      Blue light in the morning harms the biological system.
   2. B.
      Not enough morning light keeps teenagers sleep less.
   3. C.
      Not getting more light in the morning make teenagers happy.
   4. D.
      Not enough sleep makes teenagers fail in tests.
2. 2.

   We know from the passage that morning light __________.

   1. A.
      has the same effects as afternoon light
   2. B.
      may change studying habits of teenagers
   3. C.
      is important to children’s biological system
   4. D.
      has no effect on students’ tests
3. 3.

   What’s the problem of the students according to the study?

   1. A.
      There are not enough electric lights in the classroom.
   2. B.
      Being in school early affects their study habits.
   3. C.
      They have to go to bed very early to have enough sleep.
   4. D.
      They go to school too early to get enough morning light.

请根据括号中的中文提示、英文释义或句意，写出句中所缺单词，使句子通顺。

1.All of the travelers live together like a big        (家庭).

2.Harry keeps exercising every morning. As a result, he’s a few kilos       (轻的) than he used to be.

3.David is such an        (telling the truth) boy that everyone likes him very much.

4.You have to be        (having or showing patience) if you are waiting at the end of a long queue.   

5.As we know,        is the second day of a week.