【文章內(nèi)容簡介】 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)行實驗，這些鳥類的飲食中經(jīng)常含有彩虹色的昆蟲。實驗?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，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。 【點評】本題考點涉及細(xì)節(jié)理解，推理判斷和主旨大意三個題型的考查，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Choose the one that fits best according to the information given in the passage you have just read. Being able to land safely is a critically important skill for all flying animals. Comparatively speaking, ground living animals face no particular challenge when they need to stop running or crawling, while flying animals move at much higher speed, and they must be careful about how they land. Hitting the ground, or even water, at full flight speed would be quite dangerous. Before touching down, they must decrease their speed in order to land safely. Both bats and birds have mastered the skill of landing, but these two types of flyers go about it quite differently. In the past it was believed that, in terms of flying mechanics, there was little difference between bats and birds. This belief was based only on assumption, however, because for years nobody had actually studied in detail how bats move their wings. In recent years, though, researchers have discovered a number of interesting facts about bat flight. Bats are built differently from birds, and their wings are made up of both their front and hind limbs (肢體). This makes coordinating (協(xié)調(diào)) their limbs more difficult for bats and, as a result, they are not very good at flying over longer distances. However, they are much better at the ability to adjust themselves: a bat can quickly change its direction of flight or pletely reverse it, something a bird cannot easily do. Another interesting characteristic of bat flight is the way in which bats landupside down! Unlike birds which touch down on the ground or on tree branches, bats can be observed flying around and then suddenly hanging upside down from an object overhead. One downside to this landing routine is that the bats often land with some force, which probably causes pain. However, not all bats hit their landing spots with the same speed and force。 these will vary depending on the area where a bat species makes its home. For example, a cave bat, which regularly lives on a hard stone ceiling, is more careful about its landing preparation than a bat more accustomed to landing in leafy treetops.（1）Which of the following is the topic of the passage? A.Places where flying animals choose to land.B.Why scientists have difficulty observing bats.C.Differences in the eating habits of bats and birds.D.Ways in which bats move differently from birds.（2）Which of the following is a false assumption about bats that was recently corrected? A.They cannot hear any sound.B.They sleep upside down.C.They fly similarly to birds.D.They hide in tree branches.（3）The word it (in 2nd paragraph) probably refers to ______. A.the distance to the netsB.the sense of flying heightC.the flying directionD.the ability to change the speed（4）According to the passage, which of the following is NOT true? A.Bats might hurt themselves when landing.B.Bats can hang upside down like birds.C.Bats can adjust speed before landing.D.Bats and birds land in different ways.【答案】 （1）D（2）C（3）C（4）B 【解析】【分析】本文是一篇議論文，作者用研究事實來證明蝙蝠在飛行及運動方式與鳥類完全不同。以前人們認(rèn)為蝙蝠和鳥類在運動方面沒有什么區(qū)別，但現(xiàn)在的研究證明蝙蝠的構(gòu)造不同于鳥類，它們的翅膀由前肢和后肢組成，它們自我調(diào)節(jié)能力好，可迅速改變飛行方向，或完全逆行，這是鳥類不容易做到的，而且蝙蝠飛行的另一個有趣特征是蝙蝠倒立著降落的！這不同于那些降落在地上或樹枝上的鳥。 （1）考查主旨大意。根據(jù)第一段中的Both bats and birds have mastered the skill of landing, but these two types of flyers go about it quite differently.提出了蝙蝠與鳥的降落方式及飛行的不同。第二段用研究證明過去認(rèn)為蝙蝠和鳥類在飛行運動方面沒有什么區(qū)別是錯誤的。尤其是they are much better at the ability to adjust themselves: a bat can quickly change its direction of flight or pletely reverse it, something a bird cannot easily do可知蝙蝠與鳥的運動不同；第三段中的Another interesting characteristic of bat flight is the way in which bats landupside down! Unlike birds which touch down on the ground or on tree branches,…再一次說明了蝙蝠與鳥運動方式的不同。綜上所述，可知，蝙蝠與鳥運動方式的不同是本文的主題。故選D。 （2）考查推理判斷。根據(jù)第二段中的 In the past it was believed that, in terms of flying mechanics, there was little difference between bats and birds. This belief was based only on assumption, however, because for years nobody had actually studied in detail how bats move their wings…This makes coordinating (協(xié)調(diào)) their limbs more difficult for bats and, as a result, they are not very good at flying over longer distances.可推斷出，過去人們認(rèn)為蝙蝠與鳥在飛行運動方式與鳥沒有區(qū)別，最近的研究發(fā)現(xiàn)，這是不正確的，故也是要糾正的，故選C。 （3）考查代詞指代。劃線部分的上下文說蝙蝠在自我調(diào)節(jié)的能力上要好得多：蝙蝠可以迅速改變飛行方向，或者完全與它（正飛行方向）相反的方向飛行，這是鳥不容易做到的。由此可知，此處的it指的是飛行的方向。故選C。 （4）考查