【正文】 r matesC.Bees can always tell the difference between a circle and an ovalB.Whether there are any differences between bees and birds.B.A famous camouflage strategyMetallic iridescent as the best disguiseC.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動的。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。 （3）考查推理判斷。 （4）考查主旨大意。s cat39。s not forgetfulness but not being aware that we39。 The researchers began with the assumption that one mon feature of Alzheimer39。 The researchers used existing data for 1, 062 people between the ages of 55 and 90 that had been recorded over a 12year period. The data included brain scans, which the researchers used to look for visual signs of reduced glucose uptake（葡萄糖吸收）.It is an objective marker of the sort of reduced brain function that goes along with expected, glucose uptake was reduced in those with AD. What the researchers also discovered was that glucose uptake was reduced in those with mild cognitive damage who also showed evidence of reduced illness awareness. Finally, the researchers found that those who had reduced illness awareness were more likely to develop AD than those without.（1）What can be implied from paragraph 1？ A.s disease.D.Illness awareness has nothing to do with Alzheimer39。s disease.D.Realizing others39。B.Science fiction.A chemistry book.A science research.A health brochure.【答案】 （1）A（2）C（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了如何預測你的記憶喪失是否是老年癡呆癥,根據(jù)第一段中的“s name or a handsome actor who starred in a famous movie. In our thirties, we jokingly call it ‘brain freeze’ In our forties, we laugh it off as a‘senior moment’ and follow up with one of these old age jokes. But the reality is that there es a point when being forgetful stops being funny and starts to seem a bit dreadful. （2）考查細節(jié)理解。根據(jù)第四段中的“ It is an objective marker of the sort of reduced brain function that goes along with expected, glucose uptake was reduced in those with AD. ”這是一。s disease（AD） ”承認自己的健忘也許是一個很好的跡象，至少從你患老年癡呆癥,的可能性來看，可知選C。在三十多歲的時候，我們開玩笑地稱它為“大腦凍結”，在四十多歲的時候，我們把它當作“老年時期”來嘲笑，然后繼續(xù)講這些老年笑話。t remember our neighbor39。一項新的研究表明，不是遺忘，而是沒有意識到我們的健忘讓人們感到害怕。D.Having higher intake of glucose.s disease.（3）What can be a sign of developing Alzheimer39。Recognizing forgetfulness doesn39。s a rare phenomenon when young people forget something.（2）What statement does the researchers in the new study agree with? A.The memory of the young is better than the old.C.t worry. The fact that you recognize your own forgetfulness may be a very good sign, at least in terms of the possibility of your developing Alzheimer39。s disease（老年癡呆癥）？ In our twenties, we find it funny when we can39。 【點評】本題考點涉及細節(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，要求考生在捕捉細節(jié)信息的基礎上，進一步根據(jù)上下文的邏輯關系，進行分析，推理，概括和歸納，從而選出正確答案。實驗目的是看看鳥類的視角是否能提供幫助。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.”似乎我們的目標上驚人的彩虹表面在視覺上打破了原本可以辨認的目標形狀，這使得它們很難區(qū)分。catching colors could be used as a cover173。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。Why birds are not effected by iridescent insects.D.If a circle, with a sugar reward, is iridescent, the bees may have difficulty finding itD.D.live a little longer by escaping their predator(捕食者)s concealment39。up isn39。6．犇犇閱讀理解 本文主要對座頭鯨外形特點、體重、顏色，以及其如何繁殖喂養(yǎng)等生活習性等作了介紹，并呼吁大家保護意識。可知，座頭鯨在熱帶地區(qū)繁殖。 such patterns enable individual recognition可知，座頭鯨體色由深棕色至黑色，腳蹼、身體底部和尾鰭上通常是大面積的白色；這樣的圖案使單個的座頭鯨很容易被識別。help distinguish humpbacks from other similar species【答案】 （1）C（2）A（3）C 【解析】【分析】本文是一篇說明文，介紹了座頭鯨外形特點、體重、顏色，以及其如何繁殖、喂養(yǎng)等生活習性等，并呼吁大家保護它。 . A.They can39。Their bumpy tubercles and blowholes are on both sides of head.（2）Which of the following can be inferred from this article39。 Protection status: Recovering well from past whaling and now numerous in some former migration and aggregation areas, rarely seen in others.（1）Which of the following is TRUE about humpback whales? A.hump39。 some nonbreeding females probably remain in the southern waters during winter. Young humpback whales return to their area of birth but in later life some wander between breeding areas. Humpbacks eat small shrimps and other schooling prey, such as fish, forming small, cooperative groups of two to three individuals to feed. Bushy blow, occasionally Vshaped often extensive white on flippers and underside of body and flukes。 Bumpy tubercles on top of head variable dorsal fin size and shape。 Stocky, slowmoving whale, rarely grows beyond 15 metres in length 【點評】本題考點涉及細節(jié)理解和推理判斷兩個題型的考查，是一篇科研類閱讀，要求考生在捕捉細節(jié)信息的基礎上，根據(jù)上下文進行邏輯推理，從而選出正確答案。 （4）考查細節(jié)理解。 （3）考查細節(jié)理解。 （2）考查推理判斷。它還展示了一種新的方式來了解人們有多關心自然，以及哪些物種和地區(qū)可能是最有效的保護目標。s not getting close to nature.（4）Why does Richard think such search data is useful? helps to aim at conservation targets. increases interest in big data approaches. keeps track of trends in biologists39。 Richard Grenyer, Associate Professor from the University of Oxford, says search data is useful to conservation biologists, By using these big data approaches, we can direct our attention towards the difficult questions in modern conservation: which species and areas are changing, and where are the people who care the most and