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1、Unit 3 Life in the future.阅读理解(2016广东四校第一次联考)See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, youll be able to get it in minutes just by hitting “print” on your computer.You mi
2、ght find it hard to believe that you could actually “print” an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays (喷) ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bo
3、ttom to the top, gradually building up a shape.Instead of ink, the materials the 3D printer uses are mainly plastic, resin(树脂) and certain metals. The thinner each layer isfrom a millimetre to less than the width of a hairthe smoother and finer the object will be.This may sound like a completely new
4、 technology, but the truth is that 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.Last year, though, saw a big change in the 3D printing industryprinters became much cheaper. For example, 10 years ago a desktop 3D printer m
5、ight have cost 20, 000, while now they cost only about 1, 000, according to the BBC.Taken out of the factory and introduced to more diverse and common uses, 3D printing can create just about anything you can think offlutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scient
6、ists from Cornell University in New York have just made an artificial ear using a 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.However, as 3D printing becomes more common, it may bring about certain problemssuch as piracy. “Once you can download a co
7、ffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3D printer, who will visit a retail (零售的) store again? ”an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?文章大意：本文介绍了3D打
8、印机的使用材料和工作原理等，它在未来的广泛使用能够改变人们的生活，同时也会产生盗版行为等问题。1According to the article, in the future, the 3D printing technology will _.Aenable people to make better purchases onlineBchange the way we make many productsCbe applied as widely in our daily life as computersDshorten the time it takes for people to g
9、et what they buy online答案：B细节理解题。根据文章第二段中“Just as a traditional printer sprays(喷) ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.”可知，未来的3D打印机会改变我们生产很多产品的方式。2What happened in the 3D printing indu
10、stry last year?AThe 3D printing technology was taken out of the factory.BThe 3D printing technology began to be used in various fields.CThe 3D printer was used for medical treatment for the first time.DThe 3D printer became more affordable for consumers.答案：D细节理解题。根据文章第五段“Last year, though，saw a big
11、change in the 3D printing industryprinters became much cheaper. For example, 10 years ago a desktop 3D printer might have cost 20,000, while now they cost only about 1,000, according to the BBC.”可知，去年的3D打印机变得很便宜了。3How is the last paragraph developed?ABy giving examples.BBy making comparisons.CBy ana
12、lyzing the cause and effect.DBy presenting research findings.答案：A篇章结构题。根据最后一段中such as piracy和专家所说的话可知，本段使用了举例说明的方法。4What is the best title of the passage?AGreat Demand for 3D PrintersBTechnology in the FutureCOnline Shopping DisappearingDPrinting out Everything答案：D主旨大意题。本文主要讲述了3D打印机在未来的广泛使用能够改变人们的生活
13、。.七选五根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余项。(2015北京市朝阳区第一次综合练习)Virtual (虚拟)TeamsVirtual teams are a great way to enable teamwork in situations where people are not sitting in the same office at the same time._1_ This is particularly so for businesses that use virtual teams to build global presence,
14、 or need less common skills or knowledge from people who are unwilling to travel.Virtual teams are governed by the same basic principles as traditional teams. _2_ It is the way the team members communicate. They rely on special communication channels enabled by modern technologies, such as emails, f
15、axes, and teleconferences, and alike. Due to more limited communication channels, the success of virtual teams is much more sensitive to the type of project the group works on, what people are selected, and how the team is managed._3_ One challenging case is the projects that rely heavily on integra
16、ted work. That is to say, when each persons work depends significantly on what someone else is doing at the same moment, like in a sports team, there is an ongoing heavy exchange of information in real time, and the tasks have to go through a strict order within a short time.Not everyone can perform well in a virtual team environment. _4_ Another import
