【文章內(nèi)容簡(jiǎn)介】 Behrens39。 new program concerning healthy eating for schools is likely to be based on national nutrition guidelines.D.Some wealthy countries tend to reduce meat and dairy though the other areas of policy making isn39。t effected much.【答案】 （1）C（2）B（3）A 【解析】【分析】本文是一篇說(shuō)明文，介紹了營(yíng)養(yǎng)指南對(duì)地球也有利。通過(guò)膳食指南，似乎可以減輕對(duì)環(huán)境的傷害，人類(lèi)自己也可以過(guò)上健康的生活，二者可以兼得。 （1）考查推理判斷。根據(jù)第二段中的 What we found is that impacts vary across nations, but in the high173。impact nations, in general, you can see that, if you follow a nationally remended diet, despite the fact that these diets don39。t mention explicitly—or most of them don39。t explicitly mention—environmental impacts, that you are going to have lower environmental impacts due to that.” 我們發(fā)現(xiàn)（營(yíng)養(yǎng)膳食指南的）影響因國(guó)家而異，但總的來(lái)說(shuō)，在影響力較大的國(guó)家，如果你遵循國(guó)家推薦的膳食指南，即使這些膳食并未明晰對(duì)環(huán)境的影響，或者大多數(shù)膳食沒(méi)有明確說(shuō)明這一點(diǎn)，但是你對(duì)環(huán)境的影響會(huì)因?yàn)樽裱改隙鴾p輕。由此推斷出 并非所有國(guó)家都以明確的方式推薦飲食 ，這個(gè)觀點(diǎn)Paul Behrens會(huì)贊成，故選C。 （2）考查詞義猜測(cè)。根據(jù)第三段中的“A third of the ice173。free land on Earth is used for agriculture, and according to some estimates, producing food accounts for roughly a fifth of all human173。caused greenhouse gas emissions. Fertilizer runoff also leads to other problems, like the algae blooms in Lake Eerie and the Dead Zone in the Gulf of Mexico.”地球上三分之一的無(wú)冰區(qū)被用于農(nóng)業(yè)生產(chǎn)，根據(jù)一些估算，食物生產(chǎn)大約占到了人類(lèi)造成的溫室氣體排放量的五分之一。肥料徑流也導(dǎo)致了其他問(wèn)題，例如伊利湖的藻類(lèi)爆發(fā)以及墨西哥灣的死亡區(qū)域。由此推斷出劃線詞所在的句子意思是我們所吃的食物給環(huán)境帶來(lái)了巨大代價(jià)。takes a big toll on固定短語(yǔ)，“付出了巨大的代價(jià)”，故選B。 （3）考查細(xì)節(jié)理解。根據(jù)第三段中的“A third of the ice173。free land on Earth is used for agriculture, and according to some estimates, producing food accounts for roughly a fifth of all human173。caused greenhouse gas emissions.”地球上三分之一的無(wú)冰區(qū)被用于農(nóng)業(yè)生產(chǎn)，根據(jù)一些估算，食物生產(chǎn)大約占到了人類(lèi)造成的溫室氣體排放量的五分之一。由此可知。A選項(xiàng)的描述 糧食生產(chǎn)可導(dǎo)致約20%的人為造成的溫室氣體，而只使用了三分之一的無(wú)冰土地 正確，故選A。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測(cè)和推理判斷三個(gè)題型的考查，是一篇科研類(lèi)閱讀，要求考生準(zhǔn)確捕捉細(xì)節(jié)信息，同時(shí)根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。4．犇犇閱讀理解 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. Those surprising results appear in the journal Scientific Reports. Shining iridescent color, which changes depending on the angle from which it39。s viewed, is favored by everything from birds to beetles and blossoms to butterflies. And in our research group we are of course interested in why this vivid metallic color is so widespread in nature. Karin Kjernsmo of the University of Bristol adds that in some cases the showy splashes of light are a sexual strategy. 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. For example, in many of these cases it is the males that have these vivid iridescent colors and they use them in mate choice or they use them as a signal to attract mates. But iridescence also shows up in situations where reproduction is not an issue. So what we are studying now is whether natural selection imposed by predation(捕食行為) could explain the occurrence of iridescence in prey animals. The idea that eye173。catching colors could be used as a cover173。up isn39。t a new one. The father of camouflage theory, Abbott Thayer, really believed that iridescence should be categorized as a camouflage strategy. And he wrote in his famous lifework Concealing173。Coloration in the Animal Kingdom, already in 1909, that 39。brilliantly changeable or metallic colors are among the strongest factors in an animal39。s concealment39。. And this sounds like a pletely unreasonable thing to say, because how can colors that are both brilliant and changeable contribute to animal39。s concealment？ In a similar way, we were asking whether iridescence, due to its changeability, could work as a form of camouflage by preventing shape recognition. Kjernsmo and her colleagues trained bumblebees to associate a particular shape—a circle or an oval—with a sugar reward. And they found that the bees, when given a choice, would preferentially visit the 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 animals160