2020高考英语暑假练习(9)

2020高考英语暑假练习（9）阅读下面短文，从每题所给的四个选项(A、B、C和D)中，选出最佳答案。

Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws(爪)on its wings when young .They build their homes about 4.6m above the river ,an important feature(特征)for the safety of the young. It is called the hoatzin.In appearance，the birds of both sexes look very much alike with brown on the back and cream and red on the underside .The head is small, with a large set of feathers on the top, bright red eyes, and blue skin. Its nearest relatives are the common birds, cuckoos. Its most striking feature, though, is only found in the young.Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip .Using these four claws ,together with the beak(喙),they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws.During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes.( ) 1. What is the text mainly about?A．Hoatzins in dry and rainy seasons.B．The relatives and enemies of hoatzins.C．Primitive birds and hoatzins of the Amazon.D．The appearance and living habits of hoatzins.( ) 2. Young hoatzins are different from their parents in that ．A．they look like young cuckoosB．they have claws on the wingsC．they eat a lot like a cowD．they live on river banks( ) 3. What can we infer about primitive birds from the text?A．They had claws to help them climb.B．They could fly long distances.C．They had four wings like hoatzins.D．They had a head with long feathers on the top.( ) 4. Why do hoatzins collect together in smaller groups when the rainy season comes?A．To find more food.B．To protect themselves better.C．To keep themselves warm.D．To produce their young.A篇1.选D。

考查文章主题大意。

纵观全文，文章主要讲的是hoatzin麝雉，这种鸟类的外貌以及生活习性。

2.选B。

根据第一段has claws(爪)on its wings when young,和第三段可知，hoatzin在幼年期是有爪子的，而长大学会飞之后就没有了。

3.选A。

关键是primitive“原始的，早期的”的意思。

第三段第二句话。

4.选D。

最后一段最后一句话。

阅读理解课堂练学案（5）Passage Eleven (Superconducting Materials)The stone age, The Iron Age. Entire epochs have been named for materials.So what to call the decades ahead? The choice will be tough. Welcome to the age of superstuff. Material science -- once the least sexy technology – is bursting with new, practical discoveries led by superconducting ceramics that may revolutionize electronics. But superconductors are just part of the picture: from house and cars to cook pots and artificial teeth, the world will someday be made of different stuff. Exotic plastics, glass and ceramics will shape the future just as surely as have genetic engineering and computer science.The key to the new materials is researchers’ increasing ability to manipulate substances at the molecular level. Ceramics, for example, have long been limited by their brittleness. But by minimizing the microscopic imperfections that cause it, scientists are making far stronger ceramics that still retain such qualities as hardness and heat resistance. Ford Motor Co. now uses ceramic tools to cut steel. A firm called Kyocera has created a line of ceramic scissors and knives that stay sharp for years and never rust or corrode.A similar transformation has overtaken plastics. High-strength polymers now form bridges, ice-skating rinks and helicopter rotors. And one new plastic that generates electricity when vibrated or pushed is used in electric guitars, touch sensors for robot hands and karate jackets that automatically record each punch and chop. Even plastic litter, which once threatened to permanently blot the landscape, has proved amenable to molecular tinkering. Several manufacturers now make biodegradable forms; some plastic six-pack rings for example, gradually decompose when exposed to sunlight. Researchers are developing ways to make plastics as recyclable as metal or glass. Besides, composites –plastic reinforced with fibers of graphite or other compounds –made the round-the-world flight of the voyager possible and have even beenproved in combat: a helmet saved an infantryman’s life by deflecting two bullets in the Grenada invasion.Some advanced materials are old standard with a new twist. The newest fiberoptic cable that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane.But new materials have no impact until they are made into products. And that transition could prove difficult, for switching requires lengthy research and investment. It can be said a firmer handle on how to move to commercialization will determine the success or failure of a country in the near future.1.How many new materials are mentioned in this passage?[A] TwoThree[C] Four[D] Five2.Why does the author mention genetic engineering and computer science?[A] To compare them with the new materials.To show the significance of the new materials on the future world.[C] To compare the new materials to them.[D] To explain his view point.3.Why is transition difficult?[A] Because transition requires money and time.Because many manufacturers are unwilling to change their equipment.[C] Because research on new materials is very difficult.[D]Because it takes 10 years.4.Where lies success of a country in the New Age of superstuff?[A] It lies in research.It lies in investment.[C] It lies in innovation.[D] It lies in application.Vocabulary1.superstuff 超级材料2.superconducting ceramic 超导陶瓷3.exotic 神奇的4.shape 塑造，成型5.brittleness 脆性6.polymer 聚合体7.karate jacket 空手道外衣8.touch sensor 触及传感器9.each punch and chop 每一个击、打10.blot 玷污，损害风景的东西11.tinker 修补，调整12.amendable 服从于，遵循的13.biodegradable 能生物递减分解的14.six-pack rings 放六个罐子的环状物15.decompose 分解16.recyclable 可循环（使用的）17.infantryman 步兵18.deflect 使偏斜，使转向19.a new twist 一个新的观点，方法难句译注1.Material science –once the least sexy technology –is bursting with new, practical discoveries led by superconducting ceramics that may revolutionize electronics.【参考译文】材料科学，一度曾是最无吸引力（最不起眼）的技术，正以崭新的，以超导陶瓷为首的种种实用性发明绽开新颜。