【正文】 These differences in nursing behaviors likely e with major changes in t。 The team sampled minute amounts from nearly 40 fossilized teeth of our South African fossil relatives, early Homo, Paranthropus robustus and Australopithecus africanus. They measured the proportions of their stable calcium isotopes (同位素）in the tooth enamel(牙釉質(zhì)), which are a function of the mother milk intake by infants. They show that early Homo offspring(后代) was breastfed in significant proportions until the age of around three to four years, which likely played a role in the apparition of traits that are specific to human lineage(血統(tǒng)), such as the brain development. By analyzing the fossilized teeth of some of our most ancient ancestors, a team of scientists led by the universities of Bristol (UK) and Lyon (France) have discovered that the first humans significantly breastfed their infants (嬰兒) for longer periods than their contemporary relatives. 【點評】本題考點涉及細節(jié)理解，詞義猜測和推理判斷三個題型的考查，是一篇科研類閱讀，考生需要準確捕捉細節(jié)信息，同時根據(jù)上下文的邏輯關系，進行分析，推理，從而選出正確答案?？芍诘诙A段，九歲的孩子只記得他們過去的一小部分事情。根據(jù)最后一段中的“可知孩子們經(jīng)常忘記事情，因為他們沒有時間感位置感，故選D。 （3）考查推理判斷。根據(jù)第二段中的“but by the time they are over seven, these memories decline(衰退) rapidly.”到七歲以上時，這些記憶會迅速衰退，可知這些記憶在五歲和六歲時依然存在，故劃線單詞persist的意思是：存在，保留。 故選A。根據(jù)第二段“A new study has found that most threeyearolds can recall a lot of what happened to them over a year earlier, and these memories persist while they are five and six, but by the time they are over seven, these memories decline(衰退) rapidly.”一項新的研究發(fā)現(xiàn)，大多數(shù)三歲的孩子都能回憶起一年前發(fā)生在他們身上的許多事情，這些記憶在他們五歲和六歲時仍然存在，但當他們超過七歲時，這些記憶迅速衰退。然而，8至9歲兒童能夠回憶起的信息量下降到35%和36%。在七歲之前，孩子們在記憶中沒有時間感和位置感。 The youngsters first visited the laboratory at the age of three and discussed six unique events from their past, such as family outings, trips to the zoo, and the first day of school. The children then returned for a second session between the ages of five and nine to discuss the same events. The researchers found that between the ages of five and seven, the amount of memories the children could recall remained between 63 72 percent. However, the amount of information eightto nineyearold children could recall dropped to 35 and 36 percent.（1）What does the new study tell us? memories decline with years. kids are the cleverest. memories can fade easily. adults cannot recall past events.（2）What does the underlined word persist in Paragraph 2 mean? ....（3）What can we learn from Paragraph 4? cannot have clear memories of past events. can think like adults when they get older. under 7 years old have different ways of forming memories. often forget things because they have no idea of time or place.（4）In the second session, nineyearold children _________. to discuss the same events all their family outings recall 72 percent of their past events remembered a small part of their past events【答案】 （1）A（2）B（3）D（4）D 【解析】【分析】本文是一篇說明文，介紹了記憶消失的一些知識。 Most children by the age of eight or nine can only recall 35% of their experiences from under the age of three, according to the new findings. Most adults find it hard to recall events from their first few years of life and now scientists have found exactly when these childhood memories fade(消失). 【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，是一篇科技類閱讀，考生需要準確捕捉細節(jié)信息，并根據(jù)上下文進行邏輯推理，從而選出正確答案。第三、四和五段分別為Alecjandro Troccoli預測人工智能代替人類做家務的未來；Georges Nahon預測人臉識別將和商業(yè)結(jié)合在一起以及Mark Michalski對人工智能應用于醫(yī)學的預測，可知這篇文章是通過列舉一些預測進行論述展開的。故選B。根據(jù)倒數(shù)第二段中的”Georges Nahon, president, Orange Institute, a global research laboratory.“Georges Nahon，全球研究實驗室奧蘭治研究所主任。故選D?！狝lecjandro Troccoli， NVIDIA的高級研究科學家。 （2）考查細節(jié)理解。可知從前兩段我們可以了解到人們沒想到人工智能會發(fā)展得這么快。根據(jù)第二段中的”It is predicted that the development of artificial intelligence will be the story of the ing generations, not just the ing year, but as 2019 gets underway, you39。By describing personal experiences.【答案】 （1）A（2）D（3）B（4）C 【解析】【分析】本文是一篇說明文，通過Alecjandro Troccoli，Georges Nahon以及Mark Michalski對人工智能未來將應用于的領域進行預測和說明。By listing some predictions.B.By explaining cause and effect.D.Chairman of an energy corporation.B.Executive director of a hospital.Alejandro Troccoli.（3）What is Georges Nahon39。Mark Michalski.Georges Nahon.Alan Turing.The concept of AI was put forward by Ralph Haupter.D.t expect AI to develop so rapidly.B.re seeing solutions for population health, hospital operations and a broad set of clinical specialties quickly follow behind. Mark Michalski, executive director, Massachusetts General Hospital.（1）What can we know about AI from the first two paragraphs? A.s license and the new barcode (條形碼). Facial recognition is already pletely transforming security with biometric capabilities being adopted, and seeing how technology and business are connected, like Amazon is with Whole Foods, I can see a near future where people will no longer need to stand in line at the store. Georges Nahon, president, Orange Institute, a global research laboratory. Personal assistant AIs will keep getting smarter. As our personal assistants learn more about our daily routines, I can imagine the day I need not to worry about preparing dinner. My AI knows what I like to eat, which days of the week I like to cook at home, and makes sure that when I get back from work all my groceries are waiting at my doorstep, ready for me to prepare that delicious meal I had been longing for. Alecjandro Troccoli, senior research scientist, NVIDIA. It is predicted that the development of artificial intelligence will be the story of the ing generations, not just the ing year, but as 2019 gets underway, you39。6．閱讀理解 故選C。根據(jù)第一段中的“The founder of electric supercar maker Rimac has said it won39。選C。 （3）考查推理判斷。根據(jù)第三段中的“Rimac is well aware the industry is changing quickly due to the rise of selfdriving vehicles and electric bat