科目:初中英语 来源:湖南邵阳市2011年初中毕业学业水平考试英语试题 题型:050
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科目:初中英语 来源:2011年广东省广州市中考英语试卷(解析版) 题型:阅读理解
When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors?
As we know, scattering (散射) happens when light goes through the air. For the same media(媒质), if the wavelength is long, the scattering will be short. If the wavelength is short, then the scattering will be long.
Of all lights we can see red has the longest wavelength, so the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days.
Using the red light can help drivers in farther areas sec the lights. It helps drivers stow down or stop in lime. If drivers don't see the red light until they are close, they may not be able to stop the car in time. An accident may happen Red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents.
1. When the traffic lights turn ______, we will stop driving a car.
A. red B green C. yellow
2.According to the passage, the scattering of the red light is the _______.
A. longest b. weakest C. farthest
3. The underlined word "wavelength" means________ in Chinese.
A.波浪 B.光波 C.波长
4. What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
b. It can help drivers slow down or stop in time.
C. A and b
5.Which of the following is the best title?
A. Why do accidents happen
b. How does the red light travel
C. Why do we use red traffic lights
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科目:初中英语 来源:湖南省中考真题 题型:阅读理解
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科目:初中英语 来源:同步题 题型:补全对话,情景问答
选择方框中适当的选项补全对话(有两项多余) Wu Dong: Hello, Liu Qiang. I have not seen you for several weeks. Liu Qiang: Hi, Wu Dong. Nice to see you again. You didn't sec me these days because I didn't come to school. Wu Dong: Where have you been then? Liu Qiang: 1 Wu Dong: In hospital? What is wrong with you? Liu Qiang: That was an accident. Have you remembered that I said I loved fishing before? Wu Dong: 2 Liu Qiang: Yes. Good memory. I went there fishing three weeks ago. But I fell into the river. Wu Dong: 3 Liu Qiang: I stayed there for about two hours. But I did not catch one fish. So I felt worried. Suddenly I saw a big fish swimming in the river, so I went to catch it with my hands. Wu Dong: 4 Liu Qiang: Then I tell into the river. My left foot was hurt by some glass and I nearly drowned in the river. Wu Dong: Who saved you at last? Liu Qiang: A young man, and he took me to hospital. Wu Dong: 5 Liu Qiang: Yes, thanks. When we do anything, we should keep ourselves safe. Do you agree? Wu Dong: Yes. Safety is the first!
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