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2015年a卷M: Today, Mars is a frozen world. The average temperature here is lower than at the Earths South Pole. But long ago, when water may have flowed here, it must have been warmer. We dont know why Mars turned so cold, but perhaps it could be made to change once again. Could future generations somehow transform Mars, into an Earth-like world where people could live? What would life be like on Mars? Perhaps we could build farms and cities. Or perhaps we will leave Mars as we found it. Those decisions will be made by our descendants. 2015年b卷M: In the 1960s, a group of researchers came here to study dolphins. Inspired by new discoveries about the animal mind, the researchers believed they could, for the first time, communicate with another species, by teaching dolphins to speak. And so, Margarets extraordinary experiment began. Over the coming months, she would live with Peter in the Dolphin House almost full-time. Margaret would immerse him completely in her world to try to teach him English, like a mother teaching a child to speak. After months of living with Peter, the experiment was over. It was time for Margaret to say goodbye.2015年C卷M: 60 years ago, India threw off the chains of the British Empire, and became a free nation. As the brief heyday of the West draws to a close, one of the greatest players in history is rising again. India has seen the ebb and flow of huge events since the beginning of history. In the tale of life on Earth, the human story is brief. A few hundred generations cover humanitys attempts to create order, beauty and happiness on the face of the earth. Only India has preserved the unbroken thread of the human story that binds us all. 2015年D卷M: Two out of three of us now feed wild birds in our gardens, spending over 150 million pounds a year in the process. Yet a century ago, most of us did not even have gardens. We took little interest in the welfare of our feathered neighbors, and were more likely to eat a blackbird than feed it. And the very concept of garden birds was meaningless. The term hadnt even been invented. Garden birds are creatures of our making. And by watching and feeding them, weve come to know them intimately. And weve drawn them deeper into our lives than any other group of birds. 2015eM: The winds that bring the rain move in a north-south cycle up and down the continent. The wet seasons bring downpours, but not to everywhere at once. These isolated rains mean that some animals have to run for thousands of miles in search of freshly grown grass. Grass, unlike other plants, grows from its roots instead of the tip. It means it can be almost constantly cropped a never-ending supply of food. And as grass makes up over 50% of an elephants diet, its in their own interests to clear the trees and maintain space for grass to grow2015年F卷M: Out of all of Britains cities, theres one that stands alone, London. But how London came to look the way it does can also be seen from above. Because 60 years ago, the Royal Air Force photographed the whole of London from end to end, and left us a unique record of a city torn apart by war. Now exactly the same process is being repeated. And by directly comparing London then with London now, we can tell the story of the greatest transformation in the citys history. Its a transformation that continues faster now than at any time since the war2015年G卷M: Do you ever get the feeling you look at the world differently from your friends? Am I the only person who prefers clouds to blue skies? When I was a kid and my family went on holiday, Id sit by the window of the plane so I could look out at the clouds. I wanted to jump, see if I could land on one of them. All kids love clouds. So why is it when were older, we seem to spend all our holiday time and money trying to get away from them? And thats why I started the Cloud Appreciation Society. 2016bAlmostelevenkilometersdeep,thePacificisthedeepestbodyofwaterontheplanet.Butsometimes,theseabedshootstothesurface.Thecreationofanewisland.ThisisKavachi,oneofthemostactiveunderseavolcanoesintheworld.Powerfulwaveskeepsweepingitseffortsaway.Today,only1%ofthisvastoceanisland,andmuchofitowesitsexistencetothepowersofvolcanoeslikeKavachi.Thenever-endingriseandfalloflandinthePacificwillcontinuetoproducestrangeandwonderfulworlds.Thenaturalforcethatcreatedlandhereinthefirstplace,theoceanvolcano.2016年CInthispart,youarerequiredtowatchavideoclipandreadafterthespeakerinthevideo.Ibetyoucantguesswhatthisis.Itlooksstrange.Itcouldbeapieceofartor,perhaps,adeadtreethatsfallenover,butthisusedtobeunderground.Itmightbehardtoimagine,butthisusedtobearabbitshome,awarren.Andthesearetunnelsandroomswhichwecallchambers.Wepouredconcreteintoanoldwarren.Thenwewaiteduntiltheconcretewenthardandthenwedugaroundthesoilsowecouldseetheshapeofthewarren.Sowhatyourelookingatnowisawarrenfromtheoutside.Anditsamazing2016年DInthispart,youarerequiredtowatchavideoclipandreadafterthespeakerinthevideo.Besidemanyatropicalriver,therehangsthebiggestofallseedpods,theseabean.Thesehugecontainershouseoneofthemostsuccessfulofallvegetabletravelers.Onebyone,theseabeansstartontheirvoyages.ThisoneissettingoffdownasmallriverinAfrica.Afterafewmiles,even,perhaps,afewhundredmiles,theseedarrivesatthemouthofitsriver.Itcanvoyagethroughgroupsofislandsandoutintotheopenseatoridethegreatoceancurrentsforasmuchasayearandstillremainalive.2011年试题A The South Pacific Ocean is on the surface of it still a healthy ocean. We depend on it. Over 60% of the worlds fish catch comes from the Pacific. But like all oceans, it has little or no protection, so it may not stay healthy much longer. For the South Pacific, this is a critical time. Its changing in ways that. If left unchecked, could develop into a global crisis. Some of its residents have been through crisis before. And protecting the fish will ensure a healthy ocean for all the marine life of the Pacific. It will require international commitment and cooperation.2011试题BPart A Reading AloudTortoises, as heavy as four grown men. In their huge bodies they can store enough fat to go for a year without eating or drinking anything. To survive here, it seems you need to be a monster. Or is it just that you need to be different? Their rich at, their giant size made tortoises perfect for the ships larder. In 200 years, over 200,000 were taken. On some islands tortoises were completely wiped out. But out of the tragedy came some good. As more people came to Galapagos, a clearer picture of the islands began to appear. Each got its own name. 2011cThe Road tells us stories of cities, stories of wars, all passed on through travelers tales. The hardest part of the Silk Road journey was crossing the vast expanse of desert, called “The Sea of Death”. The Mogao Cave is an intersection between the edge of the Silk Road and starting point of the “Desert of Death”. The numerous stories of the Silk Road tale were hidden in the desert. The desert sand wind has two different sides, and the desert does not leave any traces. However, uncovering the Silk Roads stories is similar to counting the grains of sand in the desert. 2011d The desert leaves not a trace of what has been. Stories of people who passed through the Silk Road have become legendary. Two thousand years ago, how did people know that on the far side of an endless desert lay a world different from theirs? To travel the Silk Road containing two thousand years of history is a journey of many faces with hardships and danger around every corner. Endless desert spreads before us. After passing through this desert, what kind of land will we discover? A special record reports and eighth century Silk Road journey. The Silk Road is a path for those seeking Buddhism. 2011试题ENavigating and surviving in this vast, remote wilderness, had proved almost impossible for this experienced sailors. And at times, even the ultimate ocean travelers need help. Natural harbours may be safe heavens for sailors, but for the migratory whales, they can be death traps. One whale is still alive. Left like this, he will die within days. But hes held fast. The only opinion left is to use nets. At last hes free. But hes not out of trouble yet. First, he must negotiate the rocky heads of the bay. His sensitive skin, never designed to touch rock, is badly lacerated. He is through and back into the safety of the endless blue.navigate nvet 航行 vast v:st 广阔的,wilderness wldns 荒野,sailor seil 水手timate ltmt 首要的,最大harbour hrb 海港,heaven hevn 天堂migratory martri 流浪的,迁移的negotiate noiet 成功越过lacerate lsret 撕伤,2012ANatural medicines, made from flowers, seeds, roots and leaves. The Chinese were the first to discover the power of plants, making medicine for 4000 years. Focus on prevention rather than cure. Popular today in the east and the west. Healthy for mind, body and soul. Past and present, tribal people always made the most of nature. Explorers and botanists made them available to the rest of the world. Western and traditional medicine unite, returning to more natural cures. Copy their chemicals or use them direct. When they fail, we go back to nature for the next magic cure. 2012BThe absence or presence of water governs life on land. It determines where and how animals live. But falling rain is not always welcome. The power of water is immense. Once on land, it begins its journey back to the sea, carving its way through the earth. 65% of the human body is water. It is our absolute necessity. We cannot live without it. We need it for drinking, for bathing and to grow food. And we have gone to great lengths to get it to where we want it to be. Water, the giver of life, essential to all and forever sacred. (103 words)2012CMuch of my work here is to show people the diversity of the wildlife and to explain its biology. Its important to get to know sharks. With gray sharks there is tension. Theyll eat almost anything. You know, humans are much more dangerous to sharks than they are to us. When you spend time with sharks, you begin to understand them and learn to respect them. But you have to command their respect too. Theyre a vital link in the chain of life. Like wolves
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