【文章內(nèi)容簡介】 shape they knew to be sweet. But when the shapes were iridescent, the bees had trouble telling them apart. It seemed that the strikingly iridescent surfaces on our targets visually broke up the otherwise recognizable shape of the targets, which made them hard to distinguish. As for making use of this method for hiding in plain sight, Any practical applications is of course directly linked to any industry that has an interest in camouflage, that is how to conceal objects or make 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。s173。eye view.（1）According to the passage, iridescence is not made use of by animals to ________. A.live a little longer by escaping their predator(捕食者)B.catch the attention of their matesC.conceal themselves when in dangerD.catch sight of more colorful preys（2）From the study in the last paragraph, we can learn that ________. A.Bees can always tell the difference between a circle and an ovalB.Bees are creatures that are fascinated by sweet things that are iridescentC.If a circle, with a sugar reward, is iridescent, the bees may have difficulty finding itD.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.Whether there are any differences between bees and birds.B.Some industries that have great interest in camouflage.C.Why birds are not effected by iridescent insects.D.Which camouflage theory applies more to birds.（4）Which of the following might serve as the best title of the passage? A.A famous camouflage strategyB.Metallic iridescent as the best disguiseC.Colors unique to animalsD.Shining colors as a sexual strategy【答案】 （1）D（2）C（3）C（4）B 【解析】【分析】本文是一篇說明文，介紹了彩虹色有助于生物隱藏。 （1）考查細(xì)節(jié)理解。根據(jù)第一段中的“A good disguise keeps you hidden, right? 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.”可知彩虹色被動物用來通過逃離捕食者而活得更久，排除A；根據(jù)第三段中的“Here I would like to point out that in some species, particularly those that display strong sexual dimorphism(雌雄兩性), such as birds of paradise or some butterflies or fishes, the occurrence of iridescence is most likely driven by sexual selection.”在這里我想指出的是，在某些物種中，尤其是那些表現(xiàn)出強(qiáng)烈兩性差異的物種，比如天堂鳥、孔雀，甚至在某些蝴蝶或魚類中，彩虹色的出現(xiàn)很可能是由性別選擇所驅(qū)動的?？芍獎游镉貌屎缟鹜榈淖⒁猓懦鼴；根據(jù)倒數(shù)第二段中的“The idea that eye173。catching colors could be used as a cover173。up isn39。t a new one.”引人注目的顏色可以用來偽裝，這種想法并不新鮮，排除C，故選D。 （2）考查細(xì)節(jié)理解。根據(jù)最后一段中的“It seemed that the strikingly iridescent surfaces on our targets visually broke up the otherwise recognizable shape of the targets, which made them hard to distinguish.”似乎我們的目標(biāo)上驚人的彩虹表面在視覺上打破了原本可以辨認(rèn)的目標(biāo)形狀，這使得它們很難區(qū)分。故選C。 （3）考查推理判斷。根據(jù)最后一段說研究人員目前正在對鳥類進(jìn)行實(shí)驗(yàn)，這些鳥類的飲食中經(jīng)常含有彩虹色的昆蟲。實(shí)驗(yàn)?zāi)康氖强纯带B類的視角是否能提供幫助。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。 （4）考查主旨大意。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(shí)，最好的偽裝其實(shí)是最耀眼的偽裝，因?yàn)檠芯勘砻?，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。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷和主旨大意三個(gè)題型的考查，是一篇科研類閱讀，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。4．犇犇閱讀理解 Threequarters of the world39。s coffee farms destroy forest habitat to grow coffee in the sun and typically use harmful pesticides (殺蟲劑) and chemicals that poison the environment. When forests disappear, migratory (遷徙的) songbirds disappear, too. In order to deal with severe population and habitat loss, Smithsonian scientists created the Bird Friendly certification. Bird Friendly coffees are shadegrown, meaning the coffee is planted under trees, rather than on the land that has been cleared of all other plants. Coffee experts say shadegrown coffees taste better, because the beans ripen slower than coffee grown in the full sun, resulting in a richer, more plex flavor. Bird Friendly certified coffees grow under biodiverse shade that provides habitat for migratory songbirds and other wildlife, stores carbon and fights climate change. Bird Friendly coffees are also certified organic, meaning they are grown without pesticides, which is better for people and for the planet. Bird Friendly producers can also earn more for their crops. The wood and fruit trees on shade coffee farms provide farmers with additional ine. Every cup of Bird Friendly coffee purchased rewards these farmers with a little more money for being good stewards of the environment and encourages them to continue conserving Bird Friendly habitat. Buying Bird Friendly supports the Smithsonian Migratory Bird Center39。s conservation research aimed at understanding and protecting your feathered friends. You can purchase Bird Friendly certified coffees around the world and protect wildlife and habitat with every cup. Find a store or cafe near you, or better yet, have it shipped to your door when you order online.（1）What is the present situation of coffee farms? A.One fourth of them have destroyed forest habitat for birds.B.Pesticides and chemicals used on them poisoned many birds.C.Farmers have been aware of environment protection.D.Scientists pay attention to them and have e up with an idea.（2）What39。s a characteristic of Bird Friendly coffees? A.They may have a better taste.B.They have a strange flavor.C.They take less time to ripen.D.They are grown on unpolluted land.（3）How can Bird Friendly farmers earn more money? A.By charging consumers more money.B.By selling fruits and wood from trees.C.By