1、Unit 5 Revealing nature.阅读理解Can you imagine having flexible computer screens and mobile phones which change shape to tell you when you have a new message? It sounds like a crazy idea, but in fact its already been invented!A model called MorePhone has been created by scientists at the Human Media Lab
2、 in Canada. Its based on flexible plastic technology developed in Cambridge in the UK by an organization called Plastic Logic.The flexible screens can be any size, and are easy to read in direct sunlight. They can be black and white or colorful and are very thin and light. Rachel Lichten, who works
3、at Plastic Logic, says you can even jump on them. Besides, it wastes very little electric energy, so there is no need for large batteries, and this makes them easier to carry around. Lichten says this technology could be used for heart monitoring, smart watches, second screens for mobile phones, but
4、 there are many tests to be done before it is used for medical devices planted in human body.Plastic Logic has spent 13 years developing this new technology. Their challenge now is to think of new ways to use it. Lichten says it is always the same with new technologies. She says “bringing new techno
5、logy to the market is a challenge, especially because it is revolutionary. However, for the next generation of products, you have to know what the next generation of products will be.” Working with mobile phones or laptops that can roll up like a piece of paper could turn hardware into flexible one.
6、这是一篇说明文。文章介绍了一款MorePhone型号的手机，它可以在收到信息时改变形状让你知道。它是以软塑料技术为基础的，这项技术有很多优势但是它的使用推广还在进一步探究中。1How will the phone inform you of a new message in the future?ABy ringing you. BBy playing music.CBy changing shape. DBy displaying picture.答案：C解析：细节理解题。由第一段中的“Can you imagine having flexible computer screens and
7、mobile phones which change shape to tell you when you have a new message？(你能想象拥有一款灵活的电脑屏幕或者收到信息会改变形状来通知你的手机吗？)”可知，将来手机可以通过改变形状来通知你收到新信息。故选C。2.What is the advantage of the flexible screen?AIts portable. BIts fragile.CIt has a single color. DIt has no battery.答案：A解析：细节理解题。由第三段中的“Besides, it wastes ver
8、y little electric energy, so there is no need for large batteries, and this makes them easier to carry around.”可知，软塑料屏需要很少的电量，不需要大电池，使得手机很方便携带。“portable”意为“轻便的”，故选A。3Which device may probably use the flexible screen?AElectric toys. BSmart watches.CPlastic buttons. DMobile phones first screens.答案：B解析
9、：细节理解题。由第三段中的“Lichten says this technology could be used for heart monitoring, smart watches, second screens for mobile phones，”可知，这项技术可以适用于心率监测器、智能手表、手机的第二个屏幕等。故选B。4What is the challenge for the Plastic Logic now?AThe revolutionary concept.BSpending many years on the technology.CUncertainty of what
10、 the products will be like.DPromoting the new technology in the market.答案：D解析：细节理解题。由最后一段中的“Their challenge now is to think of new ways to use it.”以及“bringing new technology to the market is a challenge，”可知，软塑料屏现在面临的挑战是想到新的方法来使用它，也就是将它推向新的市场。故选D。.七选五Zoo animals VS animals in the wildZoo animals usua
11、lly live longer than their wild counterparts. This is because they have access to medical care and better nutrition in zoos. Moreover, there is a lack of predators(捕食者). 1 Elderly wild animals lose their strength, ability to find and digest food and often lose their social standing in their species
12、social structure. Zoos are learning how to care for old animals.Boredom is a big problem for animals in zoos and something animals in the wild do not have to face. Animal experts believe that a small place produces boredom. 2 They also provide companions and hide pieces of food so the animals have t
13、o search for it as in the wild. 3 A case in point is the Asiatic wild horse. The species was hunted to extinction in the wild by 1969. The entire world population now lives in zoos and nature preserves. The largest population is kept at the National Zoo in Washington DC. All of those animals were zo
14、oborn.Animals living in the wild may come into contact with people. The animals may hunt livestock(家畜)or eat farmers crops. 4 In good zoos, people can see that these animals are not just able to make trouble, but lead complex lives. This can help people save the animal and the habitat needed to keep
15、 the animal alive in the wild.Animals often reproduce better when they are in the wild. 5 One of the remarkable examples is the female giant panda. Using artificial(人工的) means has helped raise the worldwide panda population. Also, by trying to recreate the animals natural living conditions as much a
16、s possible, zoo animals will breed.AThe goals of zoos have changed.BHowever, some animals are an exception.CIf they live in the wild, they have to battle against them.DAs a result, they are considered harmful and are hunted.EEven so, it often leaves one to wonder if the animals live well.FFor some s
17、pecies, living in zoos is the only way the species can survive.GSo good zoos have replaced all metal cages for those animals that used to live in large areas.这是一篇说明文。文章讲的是动物生活在动物园和野外的优缺点，以及某些客观因素使然。1C解析：C项中的them指上一句中的捕食者，“如果它们生活在野外，就必须得跟捕食者作斗争了”，C项切题。2G解析：上一句提到“一个狭小的空间会产生厌倦无聊”，承接上文，G项“所以好的动物园已经为那些习惯生活在大的空间的动物替换了所有金属制的笼子”，同时对应下一句的“他们还提供了同伴并且藏了一些食物为的就是让它们像在野外一样去寻找”，切题。3F解析：下一句用马举了一个例子，并且提到这种马曾经一度被猎杀至消失，故前一句应为“对于某些物种来说，生活在动物园是它们唯一可以存活下来的方式”，切题。4D解析：上一句提到“这些动物猎杀家畜或吃庄稼”，承接下文，“所以它们被认为是有害的然后就被猎杀了”，切题。5B解析：前一句提到“动物在野外的繁殖效果会更好”，后一句却用相反的例子来表明人工繁殖是促进大熊猫数量的有效方式，故B项“然而，有些动物是例外的”切题。