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1、Unit 3 Inventors and inventions 阅读理解A(2019郑州第二次预测)Many years ago, people relied on the sun, the moon and stars to find their way around. Later, the compass was introduced. And now, we have satnav(卫星导航) systems to guide us. A satnav system uses groups of satellites to show the users location. They se
2、nd information to a receiver, such as a smart phone, to show us where we are.The earliest built satnav system is the Global Positioning System, which belongs to the US. Then there is Russias Global Navigation(导航) Satellite System, the European Unions Galileo and Chinas own satellite navigation syste
3、m, BeiDou.On October 14, 2017, an ARJ21700 plane, which was the first domesticallyproduced jet equipped with the BeiDou navigation system, successfully completed a test flight. The results showed the performance of the system developed by China matches that of similar systems produced abroad, accord
4、ing to the Commercial Aircraft Corporation of China.Since its introduction in 2000, the BeiDou navigation system has seen increasing numbers of applications linked to everyday life, from shared bikes to farming.When it comes to shared bikes, smart locks that support BeiDou chips offer more accurate
5、positioning than others, making it easier to find a bike.Farmers can use BeiDouenabled tractors to plow(犁) the soil and use unmanned aircrafts with BeiDou to sow seeds, which can improve efficiency and make better use of resources. BeiDous farming applications have spread from Heilongjiang Province
6、to Beijing, Liaoning, Shanxi, Hubei and other regions across China.With its many uses, the BeiDou navigation system is even playing a big role in the Belt and Road(“一带一路”) construction.“To date, the BeiDou system has covered most parts of the AsiaPacific region, as well as countries along the Silk R
7、oad Economic Belt and the 21st Century Maritime Silk Road，”said Yang Changfeng, chief designer of the BeiDou system.Today, there are more than 20 BeiDou satellites above our heads, and China plans to launch even more this year to expand the BeiDou network to better serve the Belt and Road Initiative
8、.“As BeiDou expands its overseas reach, it will be increasingly popular in the logistics(物流) industry，”said Miao Qianjun, secretarygeneral of the navigation services association.“Ships, for example, can use it to position themselves while sailing across oceans to European countries, no longer limite
9、d to Southeast Asian regions in the near future.”【解题导语】本文是一篇说明文。作者主要介绍了中国的北斗卫星导航系统在生活中的运用，如共享单车、农业等。1What is the purpose of the first two paragraphs?ATo compare some modern satnav systems.BTo describe the benefits of satnav systems.CTo tell us how satnav systems were created.DTo introduce some satna
10、v systems and their functions.D解析：写作意图题。第一、第二段介绍了卫星导航系统的作用、简单的原理及全球主要的卫星导航系统，故答案是D。2What can we know about the BeiDou navigation system according to the article?AIt was used successfully in a new jet plane.BIt is more powerful than other satnav systems.CIt was introduced to China on October 14，2017.
11、DIt wasnt used in our everyday life until recently.A解析：细节理解题。根据第三段首句“On October 14, 2017, an ARJ21700 plane, pleted a test flight.”可知，一架装备有北斗卫星导航系统的喷气式飞机成功完成了试飞，故答案是A。3According to the article, the BeiDou navigation system is already widely used for _Aplowing the soil and sowing seedsBimproving the
12、efficiency of networksCproducing more smart locks for shared bikesDnavigating ships across oceans to European countriesA解析：细节理解题。根据第六段中的“Farmers can use.to sow seeds”和“BeiDous farming applications.regions across China.”可知，北斗卫星导航系统已经广泛运用于耕地、播种中。故答案是A。4What is Miao Qianjuns attitude toward the future
13、of the BeiDou system?AWorried.BCasual.CPositive. DDoubtful.C解析：推理判断题。根据题干中的关键词Miao QianJun定位到最后一段，根据该段首句“As BeiDou expands.the navigation services association”可知，他认为，北斗卫星导航系统将会在物流业中越来越受欢迎，由此可推知，他对北斗卫星导航系统的前景是持积极乐观的态度的，故答案是C。B(2019济南模拟)A European Union program is letting blind people experience famou
14、s paintings for the first time. It uses threedimensional(3D) printing to recreate famous paintings so they can be touched.One painting printed with the new technology is Gustav Klimts “The Kiss”. It is a popular attraction at the Belvedere Museum in Vienna, Austria. The painting shows a man and a wo
15、man standing in a field filled with flowers. They are wearing gold robes and have their arms around each other. The man leans down to kiss the woman.Klimt finished the painting in 1908. Until now, people who had trouble seeing could not appreciate the artwork. But thanks to the reproduction they can
16、 touch the piece and feel the ridges and depressions. Andreas Reichinger started making 3D versions of artwork in 2010. He said this reproduction was his most difficult project because the couples robes are so detailed.Dominika Raditsch is a blind museum visitor. She touched the reproduction. As she moved her hands around it she said, “
