【正文】 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(rèn)自己的健忘也許是一個(gè)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。 （2）考查細(xì)節(jié)理解。在三十多歲的時(shí)候，我們開玩笑地稱它為“大腦凍結(jié)”，在四十多歲的時(shí)候，我們把它當(dāng)作“老年時(shí)期”來嘲笑，然后繼續(xù)講這些老年笑話。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.t remember our neighbor39。根據(jù)第一段中的“一項(xiàng)新的研究表明，不是遺忘，而是沒有意識(shí)到我們的健忘讓人們感到害怕。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(yù)測你的記憶喪失是否是老年癡呆癥,A science research.A chemistry book.Science fiction.D.Having higher intake of glucose.B.Realizing others39。s disease.（3）What can be a sign of developing Alzheimer39。s disease.D.Recognizing forgetfulness doesn39。Illness awareness has nothing to do with Alzheimer39。s a rare phenomenon when young people forget something.（2）What statement does the researchers in the new study agree with? A.s disease.D.The memory of the young is better than the old.C. 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. The researchers began with the assumption that one mon feature of Alzheimer39。s not forgetfulness but not being aware that we39。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）？s cat39。 In our twenties, we find it funny when we can39。 【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）考查主旨大意。實(shí)驗(yàn)?zāi)康氖强纯带B類的視角是否能提供幫助。 （3）考查推理判斷。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。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。catching colors could be used as a cover173。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(dòng)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(dòng)的。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。Metallic iridescent as the best disguiseC.A famous camouflage strategyWhy birds are not effected by iridescent insects.D.Whether there are any differences between bees and birds.B.If a circle, with a sugar reward, is iridescent, the bees may have difficulty finding itD.Bees can always tell the difference between a circle and an ovalB.D.catch the attention of their matesC.live a little longer by escaping their predator(捕食者)s173。s concealment？ s concealment39。Coloration in the Animal Kingdom, already in 1909, that 39。up isn39。 The idea that eye173。 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. Shining iridescent color, which changes depending on the angle from which it39。6．犇犇閱讀理解 分析選項(xiàng)可知C項(xiàng)符合題意，故選C。本文主要對座頭鯨外形特點(diǎn)、體重、顏色，以及其如何繁殖喂養(yǎng)等生活習(xí)性等作了介紹，并呼吁大家保護(hù)意識(shí)?？芍^鯨需要在暖和的地方繁殖，故選A?？芍?，座頭鯨在熱帶地區(qū)繁殖。 （2）考查推理判斷。 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(gè)的座頭鯨很容易被識(shí)別。根據(jù)第四個(gè)小點(diǎn)后的一段Body color is dark brown to black。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(diǎn)、體重、顏色，以及其如何繁殖、喂養(yǎng)等生活習(xí)性等，并呼吁大家保護(hù)它。introduce how humpbacks migrate through some dangerous watersC. . A.They find plentiful food in tropical waters.D.They can39。 migration? A.Their bumpy tubercles and blowholes are on both sides of head.（2）Which of the following can be inferred from this article39。They are large and likely to grow longer than 15 metres.C. 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 a