【正文】 gical evolutionC.Realizing that their days are numbered, older people prefer being positive.D.由此可以推斷，免疫系統(tǒng)會(huì)暫時(shí)停止來(lái)為身體提供額外的能量。re not.可知當(dāng)我們快樂(lè)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(lè)時(shí)，免疫系統(tǒng)會(huì)減弱。 s worth of advice long after his physical body is gone.s legacy(遺產(chǎn)) online forever.s first: meaningful examples, raising plex philosophical questions about the nature of immortality and the purpose of existence itself.（1）What is the purpose of the first paragraph? highlight Kaplan39。Kaplan同意變成數(shù)字人 ，可知，第一段的內(nèi)容主要是引出下文中文章的話題數(shù)字人。s worth of advice long after his physical body is gone. ”如果一切按計(jì)劃進(jìn)行，后代可以通過(guò)移動(dòng)端的語(yǔ)音平臺(tái)和他交流，即使他的肉體不存在后，還可以問(wèn)他問(wèn)題，讓他講故事以及咨詢他一生經(jīng)驗(yàn)的寶貴建議。 Birds already have a better heart and lungs than mammals for sustained physical activity. And researchers knew that barheaded geese have even larger, thinner lungs that let them breathe more deeply and an even bigger heart to pump more oxygen to muscles than other birds.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.（1）Why did the researchers raise 19 barheaded geese and train them? A.It shows the geese could fly at high altitude for long.（3）What still puzzles scientists about the geese? A.根據(jù)第一段中的In 1953, a mountain climber reported seeing a barheaded goose soar over the peak of Mount Everest. It was thought impossible. 報(bào)道說(shuō)，一名登山者看到一只斑頭鵝飛過(guò)珠穆朗瑪峰。s heart rate and frequency of wing beats remained the same even as their metabolic rate dropped....the researchers report today in elife. This cooling likely helps p可知 風(fēng)洞實(shí)驗(yàn)表明，當(dāng)氧氣濃度最低時(shí)，鵝的心率和翅膀搏動(dòng)頻率保持不變，即使它們的新陳代謝率下降。s not clear whether these adaptations alone are what make it 。 （2）考查推理判斷。結(jié)果發(fā)現(xiàn)這種鵝可以在氧氣極低的情況下飛行，但停留時(shí)間只有幾分鐘，因此能否飛過(guò)珠峰尚不明確。The geese managed to breathe less when their blood decreased.C. 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科技類閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。 （3）考查細(xì)節(jié)理解。主要介紹安德魯 6．閱讀理解 根據(jù)最后一段中的As a result, our immune system evolved to run in maximum amounts when we39。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。Younger people adopt strategies of handling tense situations from everyday life.B.immune system will temporarily shut down to fulfill itD.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.故這項(xiàng)研究的意義在于它有助于證明保護(hù)狼的重要性。 （1）考查詞義猜測(cè)。It proves wolves feed on hundreds of species.B. After the wolves were reintroduced at Yellowstone, willow and cottonwood trees increased in number. The population of bears and bison also rose and what was once a ruling deerwolf interaction is now more diverse. Yellowstone National Park is a typical example of just how wolves can help repair an ecosystem. An October 2018 study analyzed 40 years of research on large animals inside the park.故選A。 （2）考查細(xì)節(jié)理解。France and Canada.（4）What is the text mainly about? A.D.Provide background information.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. 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，代詞指代，推理判斷和主旨大意四個(gè)題型的考查，是一篇科普類閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。根據(jù)第二段中的“Daytime skies are blue because blue shorter wavelengths of visible light tend to bounce off （反 射）air molecules better than red longer wavelength light.”可知，白天天空是藍(lán)色,因?yàn)樗{(lán)色短的波長(zhǎng)的可見(jiàn)光會(huì)反射空氣分子比紅色的長(zhǎng)波長(zhǎng)光。Storm clouds are made of water droplets and green light.B.B.A Common Piece of Celestial FortunetellingD. Big tall threatening storm clouds are made of water droplets, and even though water is best at reflecting blue light, it can still reflect green pretty well, much better than reds and oranges, so under just the right conditions, the water in and around a cloud can bounce the green light hidden in the sunset right into our eyes making the sky look green.根據(jù)最后一段中的“Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes”今后的工作將繼續(xù)側(cè)重于提高識(shí)別物體和成像形狀及體積的準(zhǔn)確性，故選B。 （2）考查細(xì)節(jié)理解。B. signals.D. When it was tested on a backpack, the accuracy rate topped 95 percent. But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools, the team said, noting its design can inspect bags or luggage without being an exposure to privacy. A study found wireless signals are able to pass through bags and suitcases to judge the sizes of dangerous metal objects and identify them. These items could include weapons, chemicals, laptops and batteries for bombs, the research team said on Tuesday.It uses antennas to pick up networks39。Discovering.可知選B。 （4）考查詞義猜測(cè)。t quite as simple as that, but scientists have found that if you see a green sky, you should probably go inside. As far as most scientists can tell, the green skies around powerful thunderstorms are usually a bination of red sunsets and water droplets.Do Green Skies Mean a Coming TornadoC.Water.（4）What can we learn about from the text? A. （2）考查細(xì)節(jié)理解。s where water es in.”可知，水既能反射藍(lán)光，也能反射紅光，故選B。 The world39。 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.（1）What does the