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1、Unit1 BOOK5 綜 合 測 試 卷(教師版) 聽力部分（省略） Ⅰ.多項(xiàng)選擇(共10小題；每小題1分，滿分10分) 21． Not everybody attending the meeting agreed to the suggestion by the chairman. A．put up　　　　　　　　 B．put on C．put forward D．put out 【解析】　put up意為“張貼，搭建”；put on意為“穿上”；put forward意為“提出”；put out意為“撲滅”。suggestion(建議)應(yīng)是“被提出”，故選p

2、ut forward。 【答案】　C 22．—In this day and age，women can have children and jobs as well. —I cant agree more.Its great to have the two . A．linked B．related C．connected D．combined 【解析】　link意為“聯(lián)系，連接”；relate意為“把……聯(lián)系起來”；connect意為“連接”；combine意為“把……結(jié)合起來”。句意：——在如今這個(gè)時(shí)代，婦女既可以養(yǎng)孩子，又可以有工作?！曳浅Ｍ?。把這二者結(jié)合起

3、來真是太棒了。故選combined。 【答案】　D 23．China Japan five to three in the last football match. A．beat B．won C．beated D．defeat 【解析】　beat和defeat的賓語是人或競爭對(duì)手；win的賓語則是war，match，game，battle等詞；beat的過去式是beat，defeat的過去式和過去分詞都是加ed。 【答案】　A 24．Many of the judges suspect her murder. A．with B．for C．of

4、 D．on 【解析】　suspect sb.of sth.為固定用法，意思是“疑心某人干某事”。句意：許多法官都懷疑她謀殺。 【答案】　C 25．She had her pocket on her way home. A．pick B．picked C．stolen D．stealing 【解析】　考查have sth.done結(jié)構(gòu)，而pick ones pocket“扒竊”是固定用法。 【答案】　B 26．Calling an ambulance and the police is important when you find a tra

5、ffic accident. A．severe B．common C．usual D．special 【解析】　severe嚴(yán)重的；common普通的；usual平常的；special特殊的。根據(jù)常識(shí)，A項(xiàng)最佳。句意：當(dāng)你發(fā)現(xiàn)一起嚴(yán)重的交通事故時(shí)，叫救護(hù)車和報(bào)警是非常重要的。 【答案】　A 27．Those who can difficulties on their way to success may keep calm when they really appear. A．know B．say C．foresee D．speak 【解析】　know知道；sa

6、y說；foresee預(yù)見；speak講，通常用來指講某種語言。句意：在走向成功的路途中能夠預(yù)見到困難的人在困難真正出現(xiàn)的時(shí)候常常能保持冷靜。 【答案】　C 28．(2012咸寧高二調(diào)研)The result of this discussion will be tomorrow. A．published B．declared C．a(chǎn)nnounced D．opened 【解析】　句意：這次討論的結(jié)果明天就要被宣布了。publish出版；open打開；declare側(cè)重于當(dāng)眾發(fā)表，多用于宣戰(zhàn)、議和、宣判等；announce 側(cè)重于宣布人們所關(guān)心或感興趣的事情。故選C項(xiàng)。

7、【答案】　C 29．(2013宜昌高二檢測)His letter was so confusing that I could hardly make any of it. A．use B．meaning C．sense D．guess 【解析】　句意：他的信讓人如此費(fèi)解，我完全不明白信的含義。make sense of “明白，理解”，符合句意。故C項(xiàng)正確。 【答案】　C 30．It is widely believed that laughter has effect on physical and mental health. A．posit

8、ive B．popular C．energetic D．sensitive 【解析】　考查形容詞詞義辨析。positive積極的；popular流行的；energetic精力充沛的；sensitive敏感的。句意：人們普遍認(rèn)為笑對(duì)身體和精神健康有積極的影響。 【答案】　A Ⅱ.完形填空(共20小題；每小題1分，滿分20分) Susanna looked into a large tank attentively in Clearwater，F(xiàn)lorida.For two years，shed been watching the injured dolphin(海豚) named Wi

9、nter 31 around the tank. In high school，Susannas 32 was to become a professional athlete. 33 ，16yearold Susanna was badly injured in an accident. At a 34 ，her left leg was amputated(截肢) just below the knee.She 35 nearly two years in the hospital and was 36 by her parents.The

10、n，Susanna 37 her first artificial leg.Because there was so little bone left， 38 was extremely painful.Even so，she 39 to graduate from high school.At 18，she 40 the hospital.After dozens of months，she was able to 41 the occasional round of golf or set of tennis.But she was 42 n

11、ot used to her artificial leg，and each 43 left her in pain for days. Susanna would watch the 44 play at Clearwater Marine Aquarium，where she felt much 45 .A young dolphin，Winter，who had lost her tail in a trap，caught Susannas 46 .The trainers fitted Winter with a hightech tail—a flex

12、ible steel joint(關(guān)節(jié)) 47 in special plastic.When they were done，Winter quickly moved around 48 the water. Susanna was impressed.“If she can do this，theres no way I cant，” she thought.She approached 49 ，who put her in touch with the inventors，Hanger Prostheti and Orthoti in Bethesda，Maryla

13、nd.Within ten days，she had a new leg.The new leg is so 50 that Susanna said，“For the first time in almost 16 years，I was painfree.” 【語篇解讀】　本文是一篇記敘文。文章講述了Susanna在一次事故中受重傷并截掉了左肢，雖然她后來裝上了假肢，但她依然無法適應(yīng)用假肢行走。一只受傷的海豚Winter讓Susanna深受鼓舞，并使得她很快適應(yīng)了用假肢行走。 31．A.run　　 B．jump　　 C．show　　 D．swim 【解析】　考查動(dòng)詞辨析。根

14、據(jù)語境可知，此處是指“名叫Winter的受傷的海豚在水槽里來回游泳?！眘wim意為“游泳”，符合語境。故答案選D。 【答案】　D 32．A.action B．dream C．a(chǎn)ttempt D．performance 【解析】　考查名詞辨析。句意：在高中，Susanna的夢(mèng)想是要成為一名職業(yè)運(yùn)動(dòng)員。dream意為“夢(mèng)想，理想”，符合語境。故答案選B。 【答案】　B 33．A.However B．Therefore C．Besides D．Anyhow 【解析】　考查連詞辨析。根據(jù)語境可知，上下兩句之間為轉(zhuǎn)折關(guān)系，所以用表示轉(zhuǎn)折關(guān)系的連詞however，意為“然而”，符合語境

15、。therefore意為“因此，所以”，besides意為“除……之外”，anyhow意為“不管怎樣”，均不符合語境。故答案選A。 【答案】　A 34．A.school B．factory C．hospital D．office 【解析】　考查名詞辨析。根據(jù)上文中的“was badly injured in an accident”以及下文中的“her left leg was amputated(截肢)just below the knee”可知，此處應(yīng)該是指“在一家醫(yī)院”。hospital符合語境，故答案選C。 【答案】　C 35．A.spent B．lived C．

16、studied D．slept 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“她在醫(yī)院里度過了幾乎兩年的時(shí)間”。spend意為“度過；消磨(時(shí)光)”，符合語境。故答案選A。 【答案】　A 36．A.thrown over B．brought over C．pushed over D．watched over 【解析】　考查動(dòng)詞短語辨析。根據(jù)語境可知，此處是指“她被她的父母照看著”。watch over意為“看管，照看”，符合語境；throw over意為“放棄，拋棄”，bring over意為“說服，把……帶來”，push over意為“推倒”，均不符合語境。故答案選D。 【答案

17、】　D 37．A.bought B．a(chǎn)ccepted C．needed D．received 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“Susanna接受了她的第一只假肢”。receive意為“收到，接受”，表示被動(dòng)地接受，符合語境。buy意為“買”；accept意為“承認(rèn)，同意，接受”，表示主動(dòng)且高興地接受；need意為“需要”，均不符合語境。故答案選D。 【答案】　D 38．A.driving B．walking C．a(chǎn)cting D．running 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“由于剩下的骨骼很少，所以走路相當(dāng)痛苦”。walk意為“走路，行走

18、”，符合語境；drive意為“開車，駕駛”，act意為“表演，行動(dòng)”，run意為“跑步，經(jīng)營”，均不符合語境。故答案選B。 【答案】　B 39．A.planned B．determined C．managed D．demanded 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，盡管如此，她依然設(shè)法從高中畢業(yè)了。manage to do sth.意為“設(shè)法完成某事，盡力做某事”，符合語境。故答案選C。 【答案】　C 40．A.stayed at B．died in C．left D．bought 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“在18歲的時(shí)候，她離開了醫(yī)院?！眑eave意

19、為“離開”，符合語境。stay at意為“暫住在……，保留”，die in意為“在……死去，死于”，buy意為“買，購買”，均不符合語境。故答案選C。 【答案】　C 41．A.play B．watch C．see D．grow 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“她能夠偶爾打幾輪高爾夫球”。play golf為固定搭配，意為“打高爾夫球”，符合語境。故答案選A。 【答案】　A 42．A.ever B．still C．even D．yet 【解析】　考查副詞辨析。根據(jù)語境可知，此處是指“她依然沒有適應(yīng)她那只假肢”。still意為“仍然，依然，還是”，符合語境。

20、故答案選B。 【答案】　B 43．A.waving B．person C．leg D．a(chǎn)ctivity 【解析】　考查名詞辨析。根據(jù)語境可知，此處是指“每次活動(dòng)都要讓她疼好多天”。activity意為“活動(dòng)，行動(dòng)”，符合語境。故答案選D。 【答案】　D 44．A.teachers B．dolphins C．classmates D．doctors 【解析】　考查名詞辨析。根據(jù)下文中的“A young dolphin，Winter”可知，此處應(yīng)選dolphins，意為“海豚”，符合語境。故答案選B。 【答案】　B 45．A.better B．worse C．more w

21、orried D．happier 【解析】　考查形容詞辨析。根據(jù)語境可知，此處是指“她感覺好多了”。much better意為“更好，好多了，好得多”，符合語境。故答案選A。 【答案】　A 46．A.hands B．feet C．eyes D．a(chǎn)rms 【解析】　考查名詞辨析。根據(jù)語境可知，此處是指那只失去尾巴的海豚吸引了Susanna的注意。catch ones eyes為固定結(jié)構(gòu)，意為“引起某人的注意；引人注目”。故答案選C。 【答案】　C 47．A.sent B．bent C．buried D．covered 【解析】　考查動(dòng)詞辨析。根據(jù)語境可知，此處是指“一個(gè)

22、靈活的鋼關(guān)節(jié)被一種特殊的塑料覆蓋著”。cover意為“覆蓋”，符合語境。故答案選D。 【答案】　D 48．A.into B．a(chǎn)cross C．through D．over 【解析】　考查介詞辨析。根據(jù)語境可知，此處是指“Winter快速地穿過水里”。表示“通過，穿過”，應(yīng)用介詞through。故答案選C。 【答案】　C 49．A.the trainers B．inventors C．teachers D．classmates 【解析】　考查名詞辨析。根據(jù)語境可知，此處是指“她朝海豚訓(xùn)練員走去”。所以選the trainers最符合語境。故答案選A。 【答案】　A 50．

23、A.advancing B．perfect C．excited D．hard 【解析】　考查形容詞辨析。根據(jù)語境可知，此處是指“這條‘新腿’是如此的完美”。perfect意為“完美的”，符合語境；advancing意為“前進(jìn)的，年長的”，excited意為“興奮的，激動(dòng)的”，hard意為“努力的，困難的”，均不符合語境。故答案選B。 【答案】　B Ⅲ.閱讀理解(共20小題；每小題2分，滿分40分) A Mankind is still evolving(進(jìn)化)，according to a recent study by a team of scientists led by a

24、Yale University evolutionary biologist.But research suggests that the natural selection process is no longer driven by survival，perhaps because of differences in womens fertility(能生育性)． The team examined 2,238 women in Framingham，Massachusetts，the US and studied the medical histories of some 14,000

25、 residents since 1948. They found that strong，slightly fat women tend to have more children.And if this trend were to continue for the next 10 generations，by 2,409 the average woman would be 2 cm shorter,1 kg heavier，and have a healthier heart. That rate of evolution is pretty similar to what we s

26、ee in plants and animals.Humans dont seem to be any exception，the team said. Other recent genetic research backs up that belief.One study by John Hawks，an anthropologist at the University of Wisconsin at Madison，found that some 1,800 human gene variations (變異) are common in recent generations becau

27、se of evolution.Among the changes are mutations (突變) that allow people to digest milk or resist malaria(瘧疾)and others that govern brain development. Since the Industrial Revolution，modern humans have grown taller and stronger.Its easy to assume that evolution is making humans fitter.But according t

28、o anthropologist Peter McAllister，the contemporary male has evolved physically into “the sorriest example of male ever on the planet”．An average Neanderthal woman，McAllister notes，could have beat Arnold Schwarzenegger in an armwrestling (腕力) match.And early Australian Aborigines could easily defeat

29、Usain Bolt in a 100m dash. However，Douglas Ewbank，of the University of Pennsylvania，says that cultural factors tend to have a much greater impact than natural selection on future generations，so people tend to ignore evolutions effects. And，despite evidence indicating evolution still works，Steve Jo

30、nes，an evolutionary biologist at University College London，thinks that the impact of evolution on humans is not the most important.“What makes humans what we are is in our minds，in our society，and not in our evolution，”said Jones. 【語篇解讀】　科學(xué)家們發(fā)現(xiàn)人類還在不斷地進(jìn)化，但是他們認(rèn)為自然選擇對(duì)人類進(jìn)化的影響已經(jīng)沒那么大了。 51．What does the

31、underlined sentence “Humans dont seem to be any exception” imply? A．Plants and animals are evolving faster than humans. B．Evolution doesnt work in humans any longer. C．The rate of evolution in plants and animals also applies to humans. D．Humans are unique in their evolution. 【解析】　推理判斷題。根據(jù)第四段內(nèi)容可

32、知，人類的進(jìn)化速度和動(dòng)植物的很相似，人類并不例外，由此可判斷動(dòng)植物的進(jìn)化速度也適用于人類。 【答案】　C 52．Why is the recent genetic research quoted in the fifth paragraph? A．To support the belief that mankind is still evolving. B．To show human gene variations are common in recent generations. C．To prove modern humans have grown fitter. D．To s

33、uggest that the natural selection process is no longer driven by survival. 【解析】　細(xì)節(jié)理解題。根據(jù)第五段中的Other recent genetic research backs up that belief可知最近的其他基因研究也支持“人類還在進(jìn)化”這一觀點(diǎn)，和文章開頭的主題句照應(yīng)。 【答案】　A 53．According to the passage，we can infer that Arnold Schwarzenegger . A．used to be a famous actor B．

34、is an American governor C．is very weak D．is very strong 【解析】　推理判斷題。第六段中舉施瓦辛格的例子是為了證明在人類越來越健壯的進(jìn)化中，男性成為最令人遺憾的例子。由對(duì)施瓦辛格的了解和文段內(nèi)容可判斷阿諾德施瓦辛格很強(qiáng)壯，力氣很大。 【答案】　D 54．What is the main idea of the passage? A．Mankind is still evolving. B．Women will get fatter. C．The history of human evolution. D．Future wo

35、men tend to have more children. 【解析】　主旨大意題。本文第一句就是主題句，后面都是圍繞著“人類還在不斷地進(jìn)化”這一觀點(diǎn)進(jìn)行論述的。 【答案】　A B Providing a highquality education for all children is important to Americas economic future.President Obama has decided to provide every child with access to a complete and competitive education，from crad

36、le (搖籃)through career. The years before a child reaches kindergarten are among the most critical in his or her life to influence learning.The President will urge states to introduce high standards across all publicly funded early learning settings，develop new programs to improve opportunities and o

37、utcomes，engage parents in their childs early learning and development，and improve the early education workforce. President Obama will reform Americas public schools to deliver a 21st century education that will prepare all children for success in the new global workplace.He will push to end the use

38、 of ineffective，“offtheshelf” tests，and support new，stateoftheart assessment and responsibility systems that provide timely and useful information about the learning and progress of students. Teachers are the single most important resource to childrens learning.President Obama will invest in a nati

39、onal effort to reward outstanding teachers，while enlisting the best and brightest in the field of teaching.And he will challenge State and school districts to remove ineffective teachers from the classroom. The President believes that investment in education must be accompanied by reform and innova

40、tion (創(chuàng)新)．He supports the expansion of highquality charter schools (特許學(xué)校)．He has challenged States to lift limits that stop growth among successful charter schools and has encouraged strict responsibility for all charter schools. President Obama has decided to ensure that America will regain its lo

41、st ground and have the highest proportion of students graduating from college in the world by 2020.The President believes that regardless of educational path after high school，all Americans should enroll in at least one year of higher education or job training to better prepare our workforce for the

42、 21st century economy. To reach these goals，the President has decided to increase higher education access and success by restructuring and greatly expanding college financial aid，while making federal programs simpler，more reliable，and more efficient for students. 【語篇解讀】　本文報(bào)道了美國總統(tǒng)Obama關(guān)于振興美國教育的一些想法

43、和措施。 55．Whats President Obamas idea about education? A．To offer all children a full and good education. B．To urge states to introduce high standards. C．To enable every child to succeed in a global economy. D．To increase higher education access. 【解析】　細(xì)節(jié)理解題。根據(jù)第一段．..to provide every child with ac

44、cess to a complete and competitive education...可知，答案為A。 【答案】　A 56．What does the underlined word “critical” in Paragraph 2 mean? A．Very formal. B．Very important. C．Very difficult. D．Very ordinary. 【解析】　詞義猜測題。根據(jù)第二段The President will urge states to introduce high standards across all publicly fund

45、ed early learning settings...可推斷，critical意為“非常重要的”。 【答案】　B 57．Which of the following things is NOT part of President Obamas decision? A．Remove ineffective teachers from the classroom. B．Reform Americas public schools. C．Enlist some teachers from other countries. D．Expand highquality charter sc

46、hools. 【解析】　細(xì)節(jié)理解題。根據(jù)第三段．..reform Americas public schools...和第四段．..remove ineffective teachers from the classroom及第五段He supports the expansion of highquality charter schools可知，A、B、D三項(xiàng)都是Obama要采取的措施，而C項(xiàng)不是。 【答案】　C 58．What can we infer from the passage? A．America has the largest number of college stu

47、dents. B．All American children will receive higher education for free. C．More and more American people intend to work as a teacher. D．Americas college education is worse than before. 【解析】　推理判斷題。根據(jù)第六段．..America will regain its lost ground...in the world by 2020可推斷，答案為D。 【答案】　D C In her works A

48、gatha Christie created two great characters.Hercule Poirot is a Belgian detective who appeared in 33 of Agatha Christies novels.He is bestknown for his moustache.Poirot thinks logically and likes order.He examines the crime scene in detail and claims that every crime can be solved. David Suchet a

49、s Hercule Poirot As time went on Agatha Christie became tired of her Belgian detective and wanted to get rid of him.But he was very popular among her readers.When he died in “Curtain” in 1978 he became the only fictional character to get an obituary (訃告) in the New York Times. Agatha Christies oth

50、er wellknown character was Miss.Marple，an old woman who wants to be an amateur (業(yè)余的) detective.She likes knitting，walking around the neighbourhood and she observes things very carefully.She became famous for solving cases where the police failed.In contrast to Hercule Poirot，Christie was very fond o

51、f Miss Marple. Almost all of Agatha Christies novels are detective novels.They focus on English people of the middle and upper classes. Usually the detective comes across a murder scene by chance or is called by a friend who may be involved.He or she questions the suspects，examines the crime scene

52、 carefully and gives the reader clues so that they may have a chance to solve the crime themselves.In the course of the story one，or even a few，of the suspects usually die. Finally the detective gets all the suspects together and gives away information that not everyone knows，until the real murdere

53、r is revealed. In some of Agatha Christies stories the murderer escapes justice；sometimes they get killed.Twice the murderer turns out to be the narrator (敘述者) of the story. 59．Which of the following is TRUE about the plots of Christies novels? A．Nearly all of Agatha Christies novels are science

54、fictions. B．The readers may have a chance to solve the crime themselves. C．In the course of the story usually all the suspects die. D．The murderer escapes justice at times but they may be punished by law. 【解析】　細(xì)節(jié)理解題。根據(jù)文中末段的“In some of Agatha Christies stories the murderer escapes justice；sometim

55、es they get killed.”可知，謀殺者有時(shí)候會(huì)逃脫了法律，有時(shí)候會(huì)受到法律的制裁。 【答案】　D 60．The underlined word in the sixth paragraph probably means . A．uncovered B．a(chǎn)rrested C．informed D．included 【解析】　詞意猜測題。根據(jù)上下文語境可知，此處表示“直到最后真正的謀殺者被揭露出來”。 【答案】　A 61．What does the text mainly tell us? A．The characters and the pl

56、ots of Agatha Christies novels. B．Miss Marple and Hercule Poirot are famous characters in Agathas novels. C．How is Agathas novels designed. D．Why Agathas novels are popular among the readers. 【解析】　主旨大意題。本文主要描述了Agatha的小說的兩個(gè)主要人物角色和主要的情節(jié)構(gòu)思等情況。 【答案】　A D A prosperous moneylender bought a house loc

57、ated right next door to the house of a tanner(鞣皮匠)．From morning till evening the tanner change hide(獸皮) into leather by treating it with tannin(單寧)．From day one the moneylender was put off by the unpleasant smells of the tannery. So，he visited the tanners house and offered to buy his house.“I wou

58、ld love to sell the house if you buy it，” said the tanner.He didnt want to do any such thing but he liked to play tricks.“Give me a week or so to deal with some things，will you？”The moneylender agreed and went away. A week later，the overpowering smell coming from the tannery brought the moneylender

59、 to the tanners doorstep again.“I understand sir，” said the tanner with wideeyed sympathy.“But my mother is visiting me this week.I cant sell the house until she goes away.Please wait for a month.” The moneylender agreed with great reluctance.He began to wait eagerly for the guests departure.In th

60、e beginning he counted each day，impatiently waiting for one to finish and the other to begin.After a while，he found he was no longer so interested in the month coming to an end.He had simply forgotten about it. He did not ask the tanner to leave when they met next，either.You see，by then the moneyle

61、nder had become accustomed to the tanyards smell.“What have you done to drive away that terrible smell？” he asked the tanner.“Have you reduced the solution？” The tanner smiled and nodded.He had been waiting for the day the moneylender would get used to the smells from the tannery and stop bothering

62、 him.That was why he had asked the moneylender to wait in the first place. 【語篇解讀】　這是一個(gè)有著深刻寓意的故事，從放債人的要求購買鞣皮匠發(fā)出令人難以忍耐的氣味的房子，到最終放棄，正是鞣皮匠的聰明做法使得自己最終還是保住了自己的生意，也給鄰居也適應(yīng)這種環(huán)境留足了時(shí)間。 62．How many times did the moneylender ask the the tanner to leave? A．1.　　　 B．2.　　　 C．3.　　　 D．4. 【解析】　細(xì)節(jié)理解題。從第二段的第一句話和第三段

63、的第一句話可以看出這個(gè)放款人共有兩次要求這個(gè)鞣皮匠離開。 【答案】　B 63．Why did the tanner asked the moneylender to wait? Because . A．he wanted to make some repairs to his house B．he wanted to do some cleaning to his house C．his mother would live in his house for a month D．he wouldnt sell his house from the bottom of h

64、is heart 【解析】　推理判斷題。從最后一段的最后一句話可以推斷出這個(gè)鞣皮匠根本就不想把自己的房子賣掉。 【答案】　D 64．At last the moneylender . A．moved to another place B．was adapted the smell C．went to quarrel with the tanner D．managed to buy the house 【解析】　細(xì)節(jié)理解題。從最后一段的“...would get used to the smells from the tannery and st

65、op bothering him.”可以判斷出正確的答案為B。 【答案】　B 65．From the passage we can know the tanner was . A．a(chǎn) funny man B．a(chǎn) wise man C．a(chǎn)n honest man D．a(chǎn) friendly man 【解析】　推理判斷題。從故事中鞣皮匠的做事方式到最終的結(jié)局可以看出這個(gè)人是一個(gè)很有辦法的人。 【答案】　B E Harvard researchers have created a tough，lowcost，biodegradable(可生物降解的)material i

66、nspired by insects hard outer shells.The materials inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic.The material，made from shrimp(蝦)shells and proteins produced from silk，is called “shrilk”．It is thin，clear，flexible and strong. A major benefit of the material is its biodegradability.Plastics toughness and flexibility represented a revolu