【正文】 them more difficult to recognize. The researchers are currently conducting experiments with birds, which often prey on iridescent insects to see if it helps to have a bird39。eye view.（1）According to the passage, iridescence is not made use of by animals to ________. A.B.conceal themselves when in dangercatch sight of more colorful preys（2）From the study in the last paragraph, we can learn that ________. A.Bees are creatures that are fascinated by sweet things that are iridescentC.Bees are likely to prefer circles to ovals, whether they are iridescent or not（3）What will be talked about in the following paragraph? A.Some industries that have great interest in camouflage.C.Which camouflage theory applies more to birds.（4）Which of the following might serve as the best title of the passage? A.B.Colors unique to animalsD. （1）考查細節(jié)理解。可知動物用彩虹色引起同伴的注意，排除B；根據(jù)倒數(shù)第二段中的“The idea that eye173。up isn39。 （2）考查細節(jié)理解。故選C。根據(jù)最后一段說研究人員目前正在對鳥類進行實驗，這些鳥類的飲食中經(jīng)常含有彩虹色的昆蟲。由此推斷接下來一段會談?wù)?為什么鳥類不受彩虹色昆蟲的影響，故選C。第一段中的“Well, sometimes the best disguise is actually the most dazzling because research reveals that flashy metallic iridescence(金屬彩虹色) can visually puzzle predators, which allows colorful prey to survive another day.”有時，最好的偽裝其實是最耀眼的偽裝，因為研究表明，閃光的金屬彩虹色能在視覺上迷惑捕食者，這讓五顏六色的獵物能夠再存活一天，是全文的主題句，結(jié)合全文內(nèi)容，可知這篇文章主要講了彩虹色有助于生物隱藏，故選B。5．犇犇Choose the one that fits best according to the information given in the passage you have just read. s increased positive outlook. Our research took us in the fascinating direction of exploring how the body uses its energy.re being chased by a tiger, you don39。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 happy, but to slow down dramatically when we39。muscles will respond to it by relaxing a little bitB.immune system will temporarily shut down to fulfill itD.experiences and related knowledgehappiness and biological evolutionC.optimism and length of life（3）What can be concluded from Robert Trivers39。Younger people adopt strategies of handling tense situations from everyday life.B.Realizing that their days are numbered, older people prefer being positive.D.Brain, muscles and immune systemB.Ancestors, emergency and evolutionEnergy, 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。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。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胞，暫時停止運作是可以的。由此可以推斷，免疫系統(tǒng)會暫時停止來為身體提供額外的能量。 （2）考查詞義猜測。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，就能活得越久，所有選項中D項（樂觀與壽命）之間最切題，故選D。根據(jù)最后一段中的As a result, our immune system evolved to run in maximum amounts when we39。re not.可知當我們快樂時，我們的免疫系統(tǒng)進化到最大程度，但是當我們不快樂時，免疫系統(tǒng)會減弱。選D。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。6．閱讀理解 s energy and then releases it as heat to make the ice on the windshield disappear. 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。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. 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】本文是一篇說明文，介紹了一種新型材料，它可以通過自身吸熱并儲存熱量，之后能夠根據(jù)需要釋放熱。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?；蛘撸傧胂笠幌萝嚨膿躏L玻璃可以儲存太陽的能量，然后釋放熱量使擋風玻璃上的冰消失)可推測，本段以衣服和騎車擋風玻璃為例，提到了如果衣服能夠吸熱和放熱、汽車的擋風玻璃能夠吸熱和自動除冰那該是多么好的事，以此來吸引對著對本文的興趣。 （2）考查細節(jié)理解。故選D。根據(jù)最后一段中的“Such chemicallybased storage materials, known as Solar Thermal Fuels(STF), have been developed before. ”這種以化學反應(yīng)為基礎(chǔ)的儲存材料，即太陽能熱燃料(STF)，以前就已經(jīng)被開發(fā)出來了，可知，STF是以化學反應(yīng)為基礎(chǔ)。 （4）考查推理判斷。故選D。7．閱讀理解 re being eaten alive within minutes of stepping outdoors. re not alone. According to Smithsonian Magazine, around 20 percent of people in the world are especially tasty to mosquitoes. What about these people makes mosquitoes39。A popular myth claims that mosquitoes prefer certain blood types, but the fact is that they simply can39。s not plicated. The two most important reasons a mosquito is attracted to you have to do with sight and smell. s why you monly find them in crowded streets and parks. 16