【文章內(nèi)容簡介】 st 60cm higher by the end of the century.”按目前的速度，世界的海洋到本世紀(jì)末平均至少升高60厘米，選D。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測和推理判斷三個題型的考查，是一篇環(huán)境類閱讀，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，同時根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，從而選出正確答案。4．犇犇閱讀下列短文，從每題所給的A、B、C和D四個選項(xiàng)中，選出最佳選項(xiàng)。 Why does time seem to fly by faster as we get old? You39。ve got your aging brain to blame. This is likely due largely to the physical changes of our nerves and neurons (神經(jīng)元). New research suggests 39。rapid fire39。 abilities of the young brain allow us to process more information during youth, causing the days to seem longer earlier in life. However, as we get old, researchers say the older brain takes more time to process information. 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. Little babies, for example, move their eyes much more often than adults because they39。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。re happening more quickly.（1）What causes time to fly faster as we get old? A.Changes of our nerves and neurons.B.Information in our brain.C.The electrical signals.D.Rapid fire abilities.（2）What is unavoidable in the process of getting old? A.Longer days.B.Aging brains.C.More images.D.Less experience.（3）Why do the days seem longer earlier in life? A.Young people are more energetic in their life.B.The younger brain takes less time to process information.C.Old people have fewer things to do than young people.D.Little babies move their eyes much more often.（4）What is the best title of the text? A.Nerves and NeuronsB.Time Flies FastC.The Older, the FasterD.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覺得時間過得較快，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間來處理接收到的信息，這樣就會讓他們覺得時間過得較快。 （1）考查細(xì)節(jié)理解。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，老年人覺得時間過得過快的原因是神經(jīng)和神經(jīng)元的變化。故選A。 （2）考查推理判斷。根據(jù)第一段中的You39。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。故選B。 （3）考查推理判斷。根據(jù)第一段中的最后兩句可知，年輕時之所以覺得日子似乎更長是因?yàn)榇竽X能夠以“快速射擊”的方式處理更多信息。當(dāng)我們變老的時候，大腦需要更多的時間來處理信息。所以說，相較于老年人，年輕人的大腦花費(fèi)更少的時間來處理信息。故選B。 （4）考查主旨大意。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，我們會覺得時間過得更快？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)致他們覺得時間過得較快。C項(xiàng)正好與主旨句呼應(yīng)，故選C。 【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。5．犇犇閱讀理解 A study found wireless signals are able to pass through bags and suitcases to judge the sizes of dangerous metal objects and identify them. These items could include weapons, chemicals, laptops and batteries for bombs, the research team said on Tuesday. Research suggested that WiFi can now be used to estimate the volume of liquids such as water, acid, alcohol and other chemicals for explosive material. The study led by researchers at the Wireless Information Network Laboratory (WINLAB) in the School. of Engineering showed a wireless device with two to three antennas(天線)that could be fitted in existing WiFi networks. The detection system analyzes what happens when wireless signals go through and bounce off objects or materials. The approach, which the paper states, works by separating the wireless interference(干擾)caused by two factors of objectsthe material and shape. Most dangerous objects such as weapons are usually metal or liquid, which have significant interference, researchers said. When it was tested on a backpack, the accuracy rate topped 95 percent. But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools, the team said, noting its design can inspect bags or luggage without being an exposure to privacy. It uses channel state information (CSI) that is readily available in lowcost WiFi devices. This could have a great impact on protecting the public from dangerous objects, said Yingying Chen, a coauthor of the study, There39。s a growing need for that now. In large public areas, it39。s hard to set up expensive screening equipment like what39。s in airports. Manpower is always needed to check bags and we want to develop a method to try to reduce manpower.” The peerreviewed study, which recently won a best paper award at the 2018 IEEE Conference on Communications and Network Security, is now published online. Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes, researchers said.（1）What does paragraph 3 talk about? A.The function of the technique.B.The way the device works.C.The principle the study is based on.D.The benefit of the study findings.（2）What39。s the advantage of the device? A.It saves people in danger of natural disasters.B.It passes through bags without damaging them.C.It uses antennas to pick up networks39。 signals.D.It protects personal information from being disturbed.（3）Why did the researchers study the device according to Yingying Chen? A.To save money and labour.B.To make full use of WiFi.C.To protect passengers39。 privacy.D.To research dangerous objects.（4）Which of the following can