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阅读理解 Think about the different ways that people use the wind. You can use it to fly a kite or to sail a boat. Wind is one of our cleanest and richest power sources(来源) as well as one of the oldest. Evidence shows that windmills(风车)began to be used in ancient Iran back in the seventh century BC. They were first introduced to Europe during the 1100s, when armies returned from the Middle East with knowledge of using wind power. For many centuries, people used windmills to grind(磨碎)wheat into flour or pump water from deep underground. When electricity was discovered in the late 1800s. people living in remote areas began to use them to produce electricity. This allowed them to have electric lights and radio. However, by the1940s when electricity was available to people in almost all areas of the United States, windmills were rarely used. During the 1970s,people started becoming concerned about the pollution that is created when coal and gas are burned to produce electricity .People also realized that the supply of coal and gas would not last forever .Then, wind was rediscovered ,though it means higher costs. Today ,there is a global movement to supply more and more of our electricity through the use of wind. 1. From the text we know that windmills A. were invented by European armies B. have a history of more than 2,800 years C. used to supply power to radio in remote areas D. have rarely been used since electricity was discovered 2. What was a new use for wind power in the late 19th century? A. Sailing a boat. B. Producing electricity C. Grinding wheat into flour. D. Pumping water from underground 3. One of the reasons wind was rediscovered in the 1970s is that_________. A. wind power is cleaner B. it is one of the oldest power sources C. it was cheaper to create energy from wind D. the supply of coal and gas failed to meet needs 4. What would the author probably discuss in the paragraph that follows? A. The advantages of wind power. B. The design of wind power plants. C. The worldwide movement to save energy D. The global trend towards producing power from wind
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参考答案:
举一反三
【单选题】防护栏的间距尺寸设计属于产品尺寸设计分类中的哪一类
A.
双限值设计
B.
大尺寸设计
C.
平均尺寸设计
D.
小尺寸设计
【判断题】防护栏的间距尺寸设计属于产品尺寸设计中的双限值设计。
A.
正确
B.
错误
【多选题】噪声有限源的几种情况是()
A.
无线源长
B.
点声源
C.
有限源长
D.
L(r)=L(r0)-15㏒(r/r0)
【单选题】"The reason why we introduced a medical aesthetics product into the pilot zone is that we see constantly surging needs. Every year, 600,000 Chinese go abroad to see a doctor, among which 20 percent ar...
A.
go outside
B.
go domestic
C.
go abroad
D.
come inside
【判断题】董源的代表作是《溪山行旅图》,是否正确?()
A.
正确
B.
错误
【判断题】具有功率自动调节控制功能的和谐型机车运行在困难区段出现空转时,不得盲目退回手柄。
A.
正确
B.
错误
【单选题】《与山巨源绝交书》的作者是()
A.
阮籍
B.
山涛 c. 稿康 D. 向秀
【单选题】( )属于设计尺寸
A.
实际偏差
B.
绝对尺寸
C.
实际尺寸
D.
公称尺寸
【简答题】具有功率自动调节控制功能的和谐型机车运行在困难地段出现空转时,不得盲目 。A. 退回手柄
【判断题】具有功率自动调节控制功能的和谐型机车运行在困难区段出现空转时,应立即退回手柄。
A.
正确
B.
错误
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