【正文】 根據(jù)最后一段中的So it39。故選C。研究人員今天在《伊利費(fèi)》雜志上報(bào)道說，...這種降溫可能有助于補(bǔ)償空氣的稀?。坏谖宥沃械腁lthough well trained, the birds were only willing to stay in the air a few minutesor less ... 盡管訓(xùn)練有素，但這些鳥只愿意在空中呆上幾分鐘。根據(jù)第四段中的The wind tunnel experiments showed that when the concentration of oxygen ...the geese39。故選B。s not clear whether these adaptations alone are what make it possible to fly the 8 hours it takes to climb over Mount Everest. But those few minutes showed these geese really could fly over the top of Mount Everest.但是否能讓這種鵝飛8小時(shí)爬上珠穆朗瑪峰尚不清楚。人們認(rèn)為這是不可能的；以及 Now researchers who raised 19 of the geesenamed for the black stripes on the backs of their headshave shown the birds really fly so high.現(xiàn)在研究人員飼養(yǎng)了這種鵝，他們發(fā)現(xiàn)這些鵝真的飛得很高。 （1）考查推理判斷。A science report.【答案】 （1）B（2）C（3）D（4）D 【解析】【分析】本文是一篇說明文，登山者報(bào)告說看到一只長(zhǎng)頸鵝翱翔在珠穆朗瑪峰的頂峰，為了確認(rèn)其真實(shí)性，研究人員養(yǎng)了18只這種鵝，在大型風(fēng)洞中訓(xùn)練它們飛行。A travel brochure.A climbing guide.A science fiction.Whether they are willing to wear backpacks and face masks.D.Whether they have super hearts and lungs.B.The geese could live through the lowest concentration of oxygen.D.It was carried out at very high altitude.B.To observe them flying through the wind tunnel.D.To test the flying height and speed of them.B. Although well trained, the birds were only willing to stay in the air a few minutesor less when wearing their backpacks and flying at 6ihigh altitudes. So it39。 The wind tunnel experiments showed that when the concentration of oxygen was at its lowestlike the 7% found on top of Mount Everest versus 21% at sea level—the geese39。 The team trained the youngsters to fly in a large wind tunnel wearing backpacks and face masks full of sensors that recorded their heart rate. blood oxygen levels, temperature, and metabolic rate—how many calories they burned per hour. The researchers simulated(模擬)10w, medium, and highaltitude conditions by altering the concentration of oxygen supplied to face masks worn by each goose as it flew in the tunnel.7．閱讀理解 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(huì)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(huì)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(cè)。由此可以推斷，免疫系統(tǒng)會(huì)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(huì)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。可知選D。 （3）考查細(xì)節(jié)理解。s protective system to lightadjusting glasses. When a person wears the glasses outside during the day, the lenses（鏡片）darken and lighten depending on how sunny it is. Plants do the same thing, he said. But in plants the adjustment can take anywhere from 10 minutes to an hour. ”可知，作者提到鏡片是為了說明植物的保護(hù)系統(tǒng)的工作原理與鏡片相同。 （2）考查推理判斷。s genes in order to make it use sunlight more quickly. Someday, the results could increase the amount of food produced around the world. ”可知，科學(xué)家發(fā)現(xiàn)改變植物基因會(huì)使植物的光合作用速度加快，將來會(huì)增加全球植物的產(chǎn)量。 （1）考查細(xì)節(jié)理解。D.Double production of tobacco plantsB.Hacking plants for more productionD.improve the flowers39。increase tobacco plants39。 qualityTo serve the science experiment smoothly.（3）In the future, the genetic changes will be used to. A. protective system.C.To warn people of the hot and bright sun.B.D.They will grow fast to produce more food.C.They will bee weaker and weaker.s genes, the protective system turned on and off more quickly than normal. As a result, leaf growth on the plants scientists used in the study increased. Leaf growth in two plants increased by 20 percent, while leaf growth on a third plant increased by 14 percent. Scientists conducted the study on tobacco plants. But they think the genetic changes will produce the same results in corn and rice. （1）What will happen to the plants when scientists change plants39。s protective system to lightadjusting glasses. When a person wears the glasses outside during the day, the lenses（鏡片）darken and lighten depending on how sunny it is. Plants do the same thing, he said. But in plants the adjustment can take anywhere from 10 minutes to an hour. This makes it hard for plants to get the right amount of sunlight needed to create food. s protective system. Normally, this system is activated when a plant gets too much sunlight, said scientist Krishna Niyogi, coauthor of the study. When the plant senses the light, it gets rid of extra energy and creates more leaves. When the plant is in shade, the protective system is turned off, but the process is slow. s genes, the scientists were able to increase the amount of leaf growth on plants between 14 and 20 percent. s genes in order to make it use sunligh