【正文】 根據(jù)第一段中的“The mud, and remains of mon flies in it, record two interglacial periods（間冰期）in northwest Greenland.”在格陵蘭島西北部，泥漿和常見蒼蠅的殘骸記錄了兩次間冰期；以及第二段中的“Although researchers have long known these two periods—the early Holocene and Last Interglacial—expe。現(xiàn)在研究人員認(rèn)為，格陵蘭北部的冰蓋經(jīng)歷了比之前認(rèn)為的更強(qiáng)烈的變暖。s scientists to find ancient lake deposits. are surprised at the landscape feature of Greenland today. measure the changing temperatures by directly examining mud. holds enough ice that might one day threaten life in coastal cities.（4）Which do you think is the best title of the passage? Used to Be Much Greener Once Experienced Warm Periods Cities Warned of Coming Disasters Greenland, A Perfect Destination【答案】 （1）C（2）B（3）D（4）A 【解析】【分析】本文是一篇說明文，介紹了在古代沉積物中發(fā)現(xiàn)的一條微小線索揭開了格陵蘭島過去和未來氣候的大秘密。s warming speed can help researchers better predict Greenland39。s ice sheet experienced stronger warming than previously thought, which could mean that Greenland is more responsible for that sealevel rise.s Greenland looked during the last two interglacial periods. During the Last Interglacial, global sea levels increased by 15 to 30 feet, largely due to thinning of Greenland and Antarctica39。s ice sheet might respond to manmade global warming. After all, Greenland covers 80 per cent of the Arctic country and holds enough ice to equal 20 feet of global sea level. Northwest Greenland might feel really remote, but what happens to that ice sheet is going to matter to everyone in every coastal city around the world, said Yarrow Axford, an associate professor in the team. One of the big uncertainties in climate science is how fast the Earth changes when it gets warmer. Geology gives us an opportunity to see what happened when the Earth was warmer than today, said Axford. This new information could help researchers better measure Greenland39。s past and future climate. Just beyond the northwest edge of the vast Greenland Ice Sheet, researchers have discovered lake mud that have survived the last ice age. The mud, and remains of mon flies in it, record two interglacial periods(間冰期)in northwest Greenland.7．Directions: Choose the one that fits best according to the information given in the passage you have just read. 作者開頭提出老年人更關(guān)注積極的事情，后文提到積極的情緒會增強(qiáng)免疫系統(tǒng)，所以本文主要講的是年齡，健康與積極的情緒之間的關(guān)系，選B。選D。re not.可知當(dāng)我們快樂時(shí)，我們的免疫系統(tǒng)進(jìn)化到最大程度，但是當(dāng)我們不快樂時(shí)，免疫系統(tǒng)會減弱。根據(jù)最后一段中的As a result, our immune system evolved to run in maximum amounts when we39。也就是說積極與免疫功能之間有關(guān)系，越積極，免疫功能越強(qiáng)，就能活得越久，所有選項(xiàng)中D項(xiàng)（樂觀與壽命）之間最切題，故選D。 （2）考查詞義猜測。由此可以推斷，免疫系統(tǒng)會暫時(shí)停止來為身體提供額外的能量。根據(jù)第二段中的“We have an enormous number of immune cells coursing through our body, a momentary break from production is fine. So, when our body needs extra energy, one of the places it goes is our immune function.”可知我們的身體里有大量的免疫細(xì)胞，暫時(shí)停止運(yùn)作是可以的。特里弗斯合作研究身體是如何使用能量的，他們的發(fā)現(xiàn)解釋了這一現(xiàn)象。Energy, effort and response【答案】 （1）C（2）D（3）D（4）B 【解析】【分析】本文是一篇說明文，研究表明，老年人往往會記住生活中積極的事物，而不是消極的事物。Ancestors, emergency and evolutionB.Brain, muscles and immune systemRealizing that their days are numbered, older people prefer being positive.D.Younger people adopt strategies of handling tense situations from everyday life.B.optimism and length of life（3）What can be concluded from Robert Trivers39。happiness and biological evolutionC.experiences and related knowledgeimmune system will temporarily shut down to fulfill itD.muscles will respond to it by relaxing a little bitB.re happy, but to slow down dramatically when we39。s cold. What you need is to shift all available energy resources to your legs, with the hope that you will live to experience another cough or sneeze.re being chased by a tiger, you don39。s increased positive outlook. Our research took us in the fascinating direction of exploring how the body uses its energy.6．犇犇Choose the one that fits best according to the information given in the passage you have just read. 故選A。 （4）考查主旨大意。根據(jù)最后一段“Loop is set to launch later this year in three eastern . states, and also in Paris, France and some of the surrounding area. Then Loop plans to expand to the . West Coast, Toronto, Canada and Britain by the end of this year or 2020.”可知，Loop計(jì)劃在2020年前將業(yè)務(wù)擴(kuò)大到加拿大和法國。故選C。 （2）考查細(xì)節(jié)理解。s cities produce 2 billion tons of trash every year. By the year 2050 that number is expected to rise to 3 billion tons. The World Bank estimates that the largest amount of trash today, about 44 percent, is plastic. But we often have to buy packaged goods. And often that packaging is made of plastic.”可知，世界上的城市每年產(chǎn)生大量的垃圾，并且其中最大的垃圾量是塑料，結(jié)合下文可知，作者寫本段目的是為下文提出新的購物模式提供背景信息。 （1）考查推理判斷。D.s environmental issue.The development of future city.C.France and Canada.（4）What is the text mainly about? A.Canada and Britain.B.United States and Switzerland.D.Demand of some panies.C.The World Economic Forum.D.Explain the reason for trash.B.Provide background information. Jennifer Morgan from the environmental nonprofit organization Greenpeace also joined in the discussion about Loop at Davos. She said that Greenpeace weles the aim of the Loop Alliance to move away from throwaway culture and disposability. But Morgan questioned whether panies worldwide are ready to change their business models. Loop is the idea of Terra Cycle, an Americanbased recycling pany. Its chief, Tom Szaky told the Associated Press (AP) that removing plastics from the ocean is not enough. He said the point is to get away from singleuse packages. Szaky said that Loop is the future of shopping. But it es from an idea of the past.s cities produce 2 billion tons of trash every year. By the year 2050 that number is expected to rise to 3 billion tons. The World Bank estimates that the largest amount of trash today, about 44 percent, is plastic. But we often have to buy packaged goods. And often that packaging is made of plastic. Environmental experts warn that our planet is drowning in plastic.