【正文】 applied to many different surfaces, such as window glass or clothing. Solar energy is only available about half the time we need it — during daylight. For the sun to bee a major power provider for human needs, there has to be an efficient way to save it up for use during nighttime and stormy days. Most such efforts have focused on storing and recovering solar energy in the form of electricity, but the new finding, by MlI professor Jeffrey Grossman, Postdoc David Zhitomirsky and graduate student Eugene Cho, could provide a highly efficient method for storing the sun39。s energy through a chemical reaction and releasing it later as heat. The key to enabling longterm, stable storage of solar heat, the team said, is to store it in the form of a chemical change rather than storing the heat itself. But heat will disappear over time no matter how good the material around it is, so the team set up a chemical storage system that can keep the energy in a stable molecular configuration. When exposed to sunlight, the molecules can stay that way for long periods Then, when triggered (觸發(fā))by a very specific temperature or something else, the molecules return to their original shape , giving off heat in the process. Such chemicallybased storage materials, known as Solar Thermal Fuels(STF), have been developed before. But those earlier efforts were designed to be used in liquid solutions and not able to make durable (耐用的) solidstate films. The new approach is the first based on a solidstate material, in this case a polymer, and the first based on inexpensive materials and widespread production technology.（1）What is the main purpose of Paragraph 1? show the main idea of the passage. practice readers39。 imagination. interest readers in the passage. introduce a new kind of material.（2）According to the passage, what can the polymer film do? can be made into window glass. can make necessary electricity. can store energy and release sunshine. can absorb sunshine and give off heat.（3）According to the passage, what is STF based on? chemical reaction. movement of heat. form of electricity. physical reaction.（4）What is the advantage of the molecular configuration? is less expensive. is very powerful. is easily available. is less changeable.【答案】 （1）C（2）D（3）A（4）D 【解析】【分析】本文是一篇說(shuō)明文，介紹了一種新型材料，它可以通過(guò)自身吸熱并儲(chǔ)存熱量，之后能夠根據(jù)需要釋放熱。 （1）考查推理判斷。根據(jù)第一段“Imagine your clothing could release enough heat to keep you warm and cozy, allowing you to stay fortable in a cooler room. Or, picture a car windshield that stores the sun39。s energy and then releases it as heat to make the ice on the windshield disappear. ”想象一下你的衣服可以釋放足夠的熱量讓你溫暖和舒適，讓你可以在冰冷的房間里保持舒適。或者，再想象一下車(chē)的擋風(fēng)玻璃可以?xún)?chǔ)存太陽(yáng)的能量，然后釋放熱量使擋風(fēng)玻璃上的冰消失)可推測(cè)，本段以衣服和騎車(chē)擋風(fēng)玻璃為例，提到了如果衣服能夠吸熱和放熱、汽車(chē)的擋風(fēng)玻璃能夠吸熱和自動(dòng)除冰那該是多么好的事，以此來(lái)吸引對(duì)著對(duì)本文的興趣。故選C。 （2）考查細(xì)節(jié)理解。根據(jù)第二段中的“thanks to a new material that can store solar energy during the day and release it later as heat. This transparent polymer film could be applied to many different surfaces, such as window glass or clothing. ”多虧了這種能在白天吸熱之后以熱能形式釋放的新型材料，這個(gè)透明的聚合物膜可以應(yīng)用于許多不同的表面，如窗戶(hù)玻璃或服裝)可知，這種聚合物膜可以吸熱，此后再以熱能的形式釋放出來(lái)。故選D。 （3）考查細(xì)節(jié)理解。根據(jù)最后一段中的“Such chemicallybased storage materials, known as Solar Thermal Fuels(STF), have been developed before. ”這種以化學(xué)反應(yīng)為基礎(chǔ)的儲(chǔ)存材料，即太陽(yáng)能熱燃料(STF)，以前就已經(jīng)被開(kāi)發(fā)出來(lái)了，可知，STF是以化學(xué)反應(yīng)為基礎(chǔ)。故選A。 （4）考查推理判斷。根據(jù)第四段中的“But heat will disappear over time no matter how good the material around it is, so the team set up a chemical storage system that can keep the energy in a stable molecular configuration. ”但是熱量會(huì)隨著時(shí)間的推移而消失，不管周?chē)奈镔|(zhì)有多好，所以研究小組建立了一個(gè)化學(xué)儲(chǔ)存系統(tǒng)，可以將能量保持在一個(gè)穩(wěn)定的分子結(jié)構(gòu)中)可推斷，這種分子結(jié)構(gòu)的優(yōu)勢(shì)是相對(duì)穩(wěn)定。故選D。 【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，是一篇科普類(lèi)閱讀，考生需要準(zhǔn)確捕捉細(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。8．閱讀理解 In 1953, a mountain climber reported seeing a barheaded goose soar over the peak of Mount Everest (珠穆朗瑪). It was thought impossible. Now researchers who raised 19 of the geese—named for the black stripes on the backs of their heads—have shown the birds really fly so high. 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. 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. 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。s heart rate and frequency of wing beats remained the same even as their metabolic rate dropped. Somehow, the birds managed to cool down their bloodthe measured blood temperature dropped so it could take in more oxygen, the researchers report today in eLife. This cooling likely helps pensate for the very thin air, the team says. 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。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.To test the flying height and speed of them.B.To confirm they could fly over Mount Everest.C.To observe them flying through the wind tunnel.D.To see how many calories they burned per hour.（2）What can we learn from the wind tunnel experiment? A.It was carried out at very high altitude.B.The geese managed to breathe less when their blood decreased.C.The geese could live through the lowest concentration of oxygen.D.It shows the geese could fly at high altitude for long.（3）What still puzzles scientists about the geese? A.Whether they have super hearts and lungs.B.Whether they have muscles pumped more oxygen to.C.Whether they are willing to wear backpacks and face masks.D.Whether they can manage to fly 8 hours to climb over Mount Everest.（4）Where does the tex