组卷网 > 初中英语综合库 > 主题 > 人与社会 > 科普知识与现代技术 > 发明与创造
题型:阅读理解-单选 难度:0.4 引用次数:169 题号:21731004

Marconi, an Italian inventor, who gave us the radio, probably didn’t know how much his great invention would have done for the world in the years to come. Radio has perhaps done as much as any other communication tool. Things of the world can be reported to people everywhere a few seconds after they happened. Travelers in out-of-the-way places, ships at sea, and even astronauts round the earth are able to keep in touch with each other by radio.

Television is another important invention. It lets us see as well as hear the actor. Since it was invented, TV has done a great deal in the life of people everywhere. Many programs are now televised on TV.

Perhaps the most modern invention is “Telstar”, a “star” moving round the earth. It makes it possible for the people all over the world to be closer than ever before. Now on TV a family in Chicago can watch a car race in Italy, a table tennis competition in Beijing or a volleyball match in Japan as these events are actually happening!

1. How many inventions does the writer mention in the article?
A.One.B.Two.C.Three.D.Four.
2. What does the underlined word “out-of-the-way” mean in Chinese?
A.不合适的B.偏僻的C.尽力的D.繁华的
3. What does the writer tell us when he introduces Marconi in the first paragraph?
A.He is just an Italian inventor.B.He invented many useful tools.
C.His invention has done much for the world.D.He helped people exercise a lot around the world.
4. What is “Telstar” used to do according to the passage?
A.To show programs like a TV.B.To help people go to the moon.
C.To give light to the earth at night.D.To help send radio or TV information to the world.
【知识点】 发明与创造 说明文

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【推荐1】The Mayan number system appeared in the fourth century, which was about 1,000 years earlier than the time when the European number system was created. It is different from the Arabic number system with a base 10. The Mayan system had a base 20. This system is believed to have been used because the Mayans lived in such a warm area and there was hardly a need to wear shoes, 20 was the total number of fingers and toes, so the system was workable. Therefore, there were two important numbers in this system. Besides 20, the other important number is 5, which had a connection with the number of fingers and toes on one hand or foot.

The Mayan system used two symbols(符号). A dot (.)was used to mean the units(one to four)and a dash(—)meant five. The Mayans were also the first to create symbols of nothing(or zero). The most common symbol was that of a shell()but there were several other symbols(e.g. ahead). It is interesting to learn that with all of the great experts on Maths and scientists in ancient Greece and Rome, it was the Mayan Indians who came up with this symbol zero or nothing. Picture 1 is a form of different numbers and how they would have been written.

From further study, people found that the 360 day calendar(日历)also came from the Mayan. They actually used base 18 when they made the calendar. Each month included 20 days with 18 months in a year. This left five days at the end of the year which was month in itself, full of danger and bad luck. In this way, the Mayans had invented the 365 day calendar.

1. What does the underlined “It” in paragraph 1 refer to?
A.The European number system.B.The Mayan number system.
C.The Arabic number system.D.The wreck number system.
2. Which of the following symbols means sixteen?
A.B.C.D.
3. What can we learn from the article?
A.The Mayan number system had a base 10.
B.All number systems had the same symbols.
C.There were only 360 days in the Mayan calendar.
D.The symbol of zero first appeared in the Mayan number system.
4. The article is probably from _________.
A.a diaryB.an encyclopediaC.a travel guideD.a computer magazine
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【推荐2】When I opened my e-mail the other day, Rachel, a pretty woman, appeared on my computer screen. She greeted me by name and started talking happily. Sometimes she stopped to smile at me or blow a kiss. It was cool, right? In fact, she was reading to me an e-mail from my brother John.

Rachel could be there because of a new technology called Facemail lets you send in a funny way. By using it, your e-mails can be read to the receiver by an attractive person or by a clown. You can download the software at www.Facemail.com without paying. Facemail faces are lively and they can simulate the emotions that you put in you text. For example, type in , and Rachel blows a kiss.

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attractive adj.有吸引力的i

clown n.小丑

simulate v.模拟

emotion n.表情

Psycho mail n.疯人型邮件

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             People started using mirrors a long time ago. The first mirrors used were natural mirrors such as reflection in water. The first man-made mirrors were made out of the rock. Later, people used different metals such as bronze(青铜) to make mirrors. Throughout history, different types of mirrors have been used in many different cultures at the same time.
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共计 平均难度:一般