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科目:初中英語(yǔ) 來(lái)源:湖南邵陽(yáng)市2011年初中畢業(yè)學(xué)業(yè)水平考試英語(yǔ)試題 題型:050
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科目:初中英語(yǔ) 來(lái)源: 題型:
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科目:初中英語(yǔ) 來(lái)源:2011年廣東省廣州市中考英語(yǔ)試卷(解析版) 題型:閱讀理解
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(媒質(zhì)), 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.波長(zhǎng)
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:初中英語(yǔ) 來(lái)源:湖南省中考真題 題型:閱讀理解
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科目:初中英語(yǔ) 來(lái)源:同步題 題型:補(bǔ)全對(duì)話(huà),情景問(wèn)答
選擇方框中適當(dāng)?shù)倪x項(xiàng)補(bǔ)全對(duì)話(huà)(有兩項(xiàng)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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