1、Unit 3 The world of science Section AStarting out 最重要的是,它非常环保,几乎不会对环境造 成污染。 5.Ubers flying taxis are expected to start to take passengers in. A.2020B.2023C.2028D.2030 【答案】B 【解析】细节理解题。根据第三段最后一句可知,如果一切顺利的话,优步公司研制的飞行出租车将 于 2023 年开始载客,故选 B 项。 6.How are Ubers flying taxis different from helicopters? A.Th
2、ey have one big rotor. B.They need more fuel to fly. C.They have fewer fixed wings. D.They should be quieter and safer. 【答案】D 【解析】细节理解题。根据倒数第二段中的“.Ubers flying taxis should be quieter and safer than a helicopter”可知,优步公司研制的飞行出租车比直升机更安全、噪音更小,故选 D 项。 7.Which is TRUE about the flying cars according to t
3、he passage? A.They can be as efficient as airplanes and helicopters. B.They must grow in larger numbers in a few years. C.They nearly do no harm to the environment. D.They will surely help passengers avoid accidents. 【答案】C 【解析】细节理解题。根据第六段内容可知,优步公司研制的飞行出租车可以做到零排放,几乎无污 染,故选 C 项。 8.What is the passage
4、mainly about? A.Ubers plan to launch flying taxis. B.The advantages of Ubers flying taxis. C.Different opinions about Ubers flying taxis. D.The difficulties Uber is facing in testing flying vehicles. 【答案】A 【解析】主旨大意题。通读全文可知,本文主要介绍了美国优步公司最新研制的飞行出租车计划将 于 2023 年开始载客,故选 A 项。 .七选五 Self-driving cars are be
5、lieved to be the future of driving.Companies including Toyota,Uber and Google are all competing to be the first to bring them to the market.However,carmakers need to solve one problem first:1Most drivers today use gestures to show their intentions.They wave a car into a lane,or nod at passers-by and
6、 cyclists,to let them cross.2So what can they do?US carmaker Ford and its partner Virginia Tech think they have the answer,according to Business Insider. 3For example,if a driverless car is giving way,it could flash two white lights side to side.A solid white light would tell people nearby that ther
7、e are no humans in the car.A slow blinking light would show the car is coming to a stop.4To test the method on real roads,the team designed a special suit that looks exactly like a car seat.When a driver wears it,it looks like the car is driverless. The team successfully collected more than 1,500 ho
8、urs of data after about 2,900 kilometres of “self- driving” through busy cities.5Ford says it plans to share the data with 11 other carmakers,according to DOGO News.Ford hopes that in the future,every carmaker will use the same system of signals. A.But self-driving cars dont have this ability. B.Its
9、 a test for the companys self-driving technology. C.The data recorded how people interacted with a driverless vehicle. D.How driverless cars communicate with passers-by,bikers and other drivers? E.A rapidly flashing light would tell passers-by that a car is about to speed up. F.More than one-third o
10、f them are worried about the safety of self-driving cars. G.The team is testing the method that uses light signals to show what self-driving cars are. 【答案与解析】 【语篇解读】本文是一篇科技报道说明文,向读者介绍了无人驾驶车辆如何利用灯光和周围的 人与物以及其他司机进行沟通。 1.D第一段是全文的总领,下文主要介绍了无人驾驶车辆如何与过路人以及其他司机进行沟通。 2.A上文提到,大多数司机可以用手势来向他人示意。下文中又指出“So what can they do?”,故可推 断此处是将无人驾驶车辆与大多数司机进行比较,空格处是指无人驾驶车辆没有这项技能。 3.G根据本段内容可知,本句是本段的主题句,且上下文谈论的是无人驾驶车辆利用灯光信号与周围 的人进行沟通。 4.E空格处上一句讲的是慢闪灯的示意,故可知此处是与上文慢闪灯做比较。 5.C空格处承接上文,进一步解释了这些数据是记录人们怎样与无人驾驶车辆进行互动交流的。
