2019中考英语一轮练（1）（阅读理解+完形填空+任务型阅读达）
(限时:20分钟)
一、阅读理解
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话题
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体裁
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词数
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难度
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交通安全
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说明文
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176
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★★★
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5分钟
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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(媒介), if the wavelength is long, the scattering will be short. If the wavelength is short, 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 travels far. In fact, it travels faster on rainy days.
Using the red light can help drivers in farther areas see the lights. It helps drivers slow down or stop in time. 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 D. dark
2. According to the passage, the scattering of the red light is the _______.
A. longest B. weakest C. farthest D. strongest
3. The underlined word “wavelength” in Paragraph 2 means _______ in Chinese.
A. 波浪 B. 光波 C. 波长 D. 波幅
4. What can the red light help drivers do?
A. It can help drivers in farther areas see the lights.
B. It helps drivers slow down or stop in time.
C. It can make the drivers act more quickly.
D. All the above.
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? D. What is scattering?
1.【解析】选A。细节理解题。由第一段第一句可知。
2.【解析】选B。细节理解题。由第三段第一句可知。
3.【解析】选C。词义猜测题。一方面，根据length和long的拼写形式相似可猜测length的词义可能是“长度”；另一方面，可以结合物理学知识猜测。
4.【解析】选D。细节理解题。由最后一段可知。
5.【解析】选C。主旨大意题。由第一段第二句可知。
B
阅读下列短 文，从每小题所给的A、B、C、D四个选项中选出最佳选项。
At Harton High School, there are many rules. Fifteen-year-old boy Bob often breaks these rules. The boys must return to school by six o’clock. One afternoon Bob walked to the town. He looked at the shops and then went to the cinema. After the film it was eight o’clock. He walked back to school as fast as possible.
When he arrived, the main entrance was locked. He looked up at the window of his dormitory(寝室). It was on the third floor. He couldn’t climb up the wall very easily. Then he saw another window on the ground floor. It was the window of the headmaster’s office, and no one was there. He quickly climbed and jumped into the room. Just then he heard a noise. Then someone turned on a light in the corridor(走廊). Bob realized that someone is coming and he was in bad bread. He quickly hide himself under the sofa. One minute later, Mr. Mason, the headmaster, came in. He turned on the light and then he sat down on the sofa and began to read a book.
Bob lay under the sofa as quietly as possible. He looked at the headmaster’s shoes and socks for nearly an hour. Finally, the headmaster closed his book and walked towards the door.
“Thank heavens, he didn’t find me under the sofa!” thought Bob. Then Mr. Mason stopped and spoke towards the sofa. “________” He said and left the office. Bob knew it wasn’t his lucky day.
