【正文】 ccess.【答案】 （1）A（2）D（3）B（4）A 【解析】【分析】本文是一篇說明文，研究表明人類以及其他動(dòng)物對(duì)狼的恐懼對(duì)維持健康、平衡的生態(tài)系統(tǒng)是有益的，其中黃石公園灰狼的引進(jìn)就是一個(gè)典型的例子。The fear of wolves put them in danger of disappearing.C.It provides evidence that wolves are endangered animals.（4）What is the main idea of the passage? A.It helps prove the importance of protecting wolves.C.To study what good wolves can do to ecosystems.（3）What is the significance of the research? A.To show how wolves benefit from ecosystems.C.Accept.（2）For what purpose was a documentary made? A.Notice.Understand.Expect. To learn more about just how wolves are beneficial, a short documentary from Quest explains how the presence of wolves influences the behavior of deer, which eventually makes entire ecosystems more biologically diverse and healthy. In this documentary, biologist Aaron Wirsing explored why wolves and other top predators （捕食者）were needed for diverse ecosystems to develop. Using a simple video camera, Wirsing is gaining a unique view point on predatorprey relationships and changing the way we think about wolves.t adopted ecologicalprocess management—allowing natural ecological processes to take place with least human intervention. Yellowstone has benefited from the reintroduction of wolves in ways that we did not anticipate, especially the plexity of biological interactions（互動(dòng)） in the park, explained Mark Boyce, a professor in the Department of Biological Sciences. We were really surprised at that and we39。 Wolves strike fear into the hearts of many species, humans included. Our fear of them has brought them to the edge of dying out, as we have cruelly killed them as petitors and troublemakers. But researchers are discovering that the very fear they put into prey（被捕食者）species is exactly what helps make ecosystems（生態(tài)）healthy. 【點(diǎn)評(píng)】本題考點(diǎn)涉及段落大意，詞義猜測和推理判斷三個(gè)題型的考查，是一篇科普類閱讀，要求考生根據(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。”可知，作者接下來可能會(huì)告訴我們“如何全面擴(kuò)大5G覆蓋。t concentrated only in big cities.”但是不要太激動(dòng)。t get too excited. There39。 （4）考查推理判斷?！?可知，我們可以從文中推斷，科技公司將面臨智能手機(jī)可能被取代的事實(shí)。 （3）考查推理判斷。根據(jù)第二段中的“and that is to say, it is a sign of tim”也就是說，這是時(shí)間的標(biāo)志，”可知，劃線詞的意思是“標(biāo)志，象征”?！惫蔬xA。re moving closer and closer to 5G world.”緩慢但肯定的是，我們離5G世界越來越近了。 （1）考查段落大意。t concentrated in big cities.D.Smart glasses will bee faster and lighter.C.Tech panies will face the fact that smartphones may be replaced（4）What will the author probably tell us next? A.5G helps to create the artificial intelligence vehicleC.5G world won39。D.Symbol.B.Exhibition.The difference between 4G and 5G.D.The lightingfast speed of 5G.B.s still a lot of work to be done in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction so 5G isn39。 But don39。 Ericsson stated at February39。 Augmented reality glasses and virtual headset haven39。s pulling in data from other vehicles about road conditions down the lane. It could be weather information, but also connected infrastructure (基礎(chǔ)設(shè)施) construction. There39。re moving closer and closer to 5G world. From smarthome security to selfdriving cars, all the internetconnected devices in your life will be able to talk to each other at lightningfast speeds with reduced delay, Objectively speaking, the fastest 4G download speeds in the U. S. top out at an average of Mbps. But by parison 5G promises gigabit (千兆) speeds. Slowly but surely 【點(diǎn)評(píng)】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，考生需要準(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，概括歸納，從而選出正確答案。文章首句點(diǎn)明了文章談?wù)撝行模簽槭裁措S著我們變老，我們會(huì)覺得時(shí)間過得更快？后面文章主要解釋了原因：老年人因?yàn)榇竽X退化，神經(jīng)元的變化導(dǎo)致他們覺得時(shí)間過得較快。故選B。當(dāng)我們變老的時(shí)候，大腦需要更多的時(shí)間來處理信息。 （3）考查推理判斷。ve got your aging brain to blame.和第二段中的Over the years, these structures bee more plex and eventually begin to degrade.可知，隨著年齡的增長，不可避免的就是大腦結(jié)構(gòu)的老化。 （2）考查推理判斷。根據(jù)第一段中的 This is likely due largely to the physical changes of our nerves and neurons (神經(jīng)元).可知，老年人覺得時(shí)間過得過快的原因是神經(jīng)和神經(jīng)元的變化。The Function of the Brain【答案】 （1）A（2）B（3）B（4）C 【解析】【分析】本文是一篇說明文，介紹了為什么老年人會(huì)覺得時(shí)間過得較快，主要原因是隨著年齡的增長，大腦中神經(jīng)元的變化讓老年人的大腦需要更多的時(shí)間來處理接收到的信息，這樣就會(huì)讓他們覺得時(shí)間過得較快。Time Flies FastC.Little babies move their eyes much more often.（4）What is the best title of the text? A.The younger brain takes less time to process information.C.Less experience.（3）Why do the days seem longer earlier in life? A.More images.Aging brains.Longer days.The electrical signals.D.Changes of our nerves and neurons.B.re processing images at a faster rate, Beian says, For older people, this means fewer images are being processed in the same amount of time, causing experiences to seem as though they39。 The new finding put forward by a Duke University researcher was published in a paper in the journal European Review this week According to Adrian Bejan, the J. A Jones Professor of Mechanical Engineering at Duke, the physical changes of our nerves and neurons play, a major role in our perception (知覺) of time as we get old. Over the years these structures bee more plex and eventually begin to degrade.rapid fire39。 Why does time seem to fly by faster as we get old? You39。3．犇犇閱讀下列短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。故選B。本文就救助企鵝的視頻引發(fā)的熱議講述了當(dāng)動(dòng)物面臨危險(xiǎn)時(shí)，我們?nèi)绾紊斐鲈纸o出了一些建議。故選D。re watching a male polar bear eat a baby bear.可知，此句句意為：如果這是個(gè)捕食的情景，無論你是多么的心碎，你都不能干預(yù)。 （3）考查詞義猜測。m so glad. I understand not taking action directly, but a helping hand isn39。 （2）考查推理判斷。根據(jù)第二段中的“The film crew were anxious when they saw that a group of penguins had fallen into a gully and been trapped with their young. They built a slope（斜坡）so that a few of the penguins could save themselves.”和第三段中的“The case has taken the international media by storm”可知，從峽谷中救出企鵝這一事件引起了大家的熱議。 sufferings in a gully. of filming the series Dynasties.（2）Who holds a positive attitude towards human interference? Shaw. Lawson. Nieklen. Attenborough.（3）Which of the following best explains the word gutwrenching underlined in pa