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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.
【小题1】Which of the following is the result of the study?
| A．Blue light in the morning harms the biological system. |
| B．Not enough morning light keeps teenagers sleep less. |
| C．Not getting more light in the morning make teenagers happy. |
| D．Not enough sleep makes teenagers fail in tests. |
| A．has the same effects as afternoon light |
| B．may change studying habits of teenagers |
| C．is important to children’s biological system |
| D．has no effect on students’ tests |
| A．There are not enough electric lights in the classroom. |
| B．Being in school early affects their study habits. |
| C．They have to go to bed very early to have enough sleep. |
| D．They go to school too early to get enough morning light. |
Because he was incomplete(不完整的), he rolled very 37 . He saw the beautiful flowers along the road, talked with the 38 and enjoyed the sunshine on his way. He found 39 different pieces, but 40 of them fit him. So he left them all by the side of the road and 41 searching(搜索).
One day 42 circle found the right piece. It fit him perfectly. He 43 be whole, with nothing missing. He was so happy. He could roll very fast, 44 fast to notice the flowers and talk to the birds. 45 he found how different the world seemed as he rolled so quickly, he stopped. He 46 the found piece by the side of the road and rolled slowly away.
A person who has everything is 47 in some ways. He will 48 have hopes and dreams. We can’t be perfect, but we can be kind enough to share happiness with others 49 smart enough to know there is enough 50 around us to live a wonderful life.
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These days, cars are designed using computers. Let’s look at how a new car is created.
First, several designers talk about the new car and any good ideas that they have. Then they sit down at their computers and draw many sketches. The best two or three drawings are chosen and then more detailed(细节的，详情的) drawings of cars are developed on the computer. You can change the size, shape or color of any part on the computer to see how the car would look and then (73 ) you can choose the best design.
Both the inside and the (71) ________of the car have to be designed. Part of the inside of the car is built so that the designers can sit in it. They can feel if there is enough room inside and if they can reach everything. Then some cars are built—there are more than 15 000 parts of a car to test.
(74) When everything is safe, the cars are made in the factory. Again, computers are used to make sure that all the parts are ready as they are needed. （72）The factory usually stays open all through the night so that the car production never stops.
【小题1】Fill in the missing word:
“Both the inside and the _____________of the car have to be designed.”
【小题2】The underlined phrase “stays open” means______________________. (Only in English）
【小题3】“You can choose the best design.” means:
The best design can __________ __________.
【小题4】Please translate the following sentence into Chinese:
“When everything is safe, the cars are made in the factory.”
__________________________________________________________________________
【小题5】The main idea of the passage is
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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.
Which of the following is the result of the study?
- A.Blue light in the morning harms the biological system.
- B.Not enough morning light keeps teenagers sleep less.
- C.Not getting more light in the morning make teenagers happy.
- D.Not enough sleep makes teenagers fail in tests.
- A.
- 2.
We know from the passage that morning light __________.
- A.has the same effects as afternoon light
- B.may change studying habits of teenagers
- C.is important to children’s biological system
- D.has no effect on students’ tests
- A.
- 3.
What’s the problem of the students according to the study?
- A.There are not enough electric lights in the classroom.
- B.Being in school early affects their study habits.
- C.They have to go to bed very early to have enough sleep.
- D.They go to school too early to get enough morning light.
- A.
根据以上哈尔滨、北京、武汉、广州降水量年变化柱状图，选择最佳答案。
1. has the most rainfall.
A. Beijing B. Wuhan C. Guangzhou
2.The rainfall is heavy from to , covering 80% of the year’s amount (总量).
A. April ; July B. May ; September C. July ; November
3.We know from the above information.
A. the north has much more rainfall
B. Guangzhou gets the most rainfall in June
C. the south has much more rainfall
4.Beijing gets rainfall than .
A. less ; Harbin B. far more ; Wuhan C. less ; Wuhan
5.Which of the following is true?
A. The rainfall of Guangzhou in May is as heavy as in July.
B. The rainfall in Wuhan is about the same in May and July.
C. There is enough rain in the east, but little rain in the west.
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