经济学人_英文阅读_025

The Economist explains

How plausible are the proposed private Mars missions?

Jun 5th 2013, 23:50 by T.C.

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SPACE cadets have dreamed of sending people to Mars for decades. Wernher von Braun, the rocketry genius and former Nazi who built America's moon rockets, published his blueprint for a Mars mission in 1952. But although plenty of thought has gone into planning such missions, none has ever come close to flying. Now, however, two private entities—Inspiration Mars and Mars One—hope to send humans to Mars without relying on the resources of a national government. How plausible are their plans?

The two missions have radically different ambitions. Inspiration Mars's approach is the simpler of the two. It aims to use existing, space-tested hardware to send a crew of two (ideally a middle-aged, married couple—the organisers hope, perhaps naively, that this will reduce interpersonal friction) on a 501-day trip to Mars and back. Crucially, they will not land. That simplifies the mission enormously by removing the need for landing rockets, spacesuits and complicated orbital-insertion manoeuvres. (Stop giggling at the back, there.) It has been proposed by Dennis Tito, an American tycoon and veteran of NASA's Jet Propulsion Lab, which runs the agency's Mars rovers. The fact that (with a few

exceptions) little new technology is required means that plan could, conceivably, be made to work. All this would cost perhaps $1 billion. The biggest problem may be getting everything ready on time—the vagaries of orbital mechanics mean that the spacecraft must launch in January 2018.

The ambition of Mars One, by contrast, is breathtaking. Its goal is to establish a fully-fledged colony on the surface of the red planet starting in 2023. That will require all kinds of untested technology, including high-precision landing systems, environmental controls that will allow plants to grow in the Martian regolith, and technology to refine useful chemicals from Martian raw ingredients. And the astronauts had better be committed: in the interests of (relative) simplicity, Mars One offers only one-way trips. Nevertheless, the idea has proved popular with the public: around 80,000 people have applied to be one of the project's astronauts. Experts are less gung-ho. None that The Economist could find believe that Mars One's Martian colony has any real chance of becoming reality.

Much of the press coverage has focused on how exactly Mars One and Inspiration Mars will pay for their plans. Mr Tito is ploughing in a good deal of his own money, but both projects have talked about raising money by selling TV rights. Indeed, Mars One (whose first flight alone would cost perhaps $6 billion) wants to run a series of reality-TV programmes covering every aspect of the mission and sell sponsorship rights. That might seem odd. Yet a great deal of manned space flight, right back to the first flight of Yuri Gagarin in 1961, has arguably had more to do with showbusiness than science. The space race between America and the Soviet Union was an expensive public-relations battle between capitalism and communism. Television has been almost as important a technology as the rockets themselves: much of the cultural impact of the Moon landings came from the fact that they were broadcast live from the lunar surface. The idea of a private firm paying for a Mars mission by selling the TV rights would, in other words, simply be a logical development in a grand tradition.

经济学人科技类文章中英双语

The Brain Activity Map 绘制大脑活动地图 Hard cell 棘手的细胞 An ambitious project to map the brain is in the works. Possibly too ambitious 一个绘制大脑活动地图的宏伟计划正在准备当中，或许有些太宏伟了 NEWS of what protagonists hope will be America’s next big science project continues to dribble out. 有关其发起人心中下一个科学大工程的新闻报道层出不穷。 A leak to the New York Times, published on February 17th, let the cat out of the bag, with a report that Barack Obama’s administration is thinking of sponsoring what will be known as the Brain Activity Map. 2月17日，《纽约时报》刊登的一位线人报告终于泄露了秘密，报告称奥巴马政府正在考虑赞助将被称为“大脑活动地图”的计划。 And on March 7th several of those protagonists published a manifesto for the project in Science. 3月7日，部分发起人在《科学》杂志上发表声明证实了这一计划。 The purpose of BAM is to change the scale at which the brain is understood. “大脑活动地图”计划的目标是改变人们在认知大脑时采用的度量方法。 At the moment, neuroscience operates at two disconnected levels. 眼下，神经学的研究处在两个断开的层次。 The higher one, where the dimensions of features are measured in centimetres, has many techniques at its disposal, notably functional magnetic-res onance imaging, which measures changes in tissues’ fuel consumption. 在相对宏观的层次当中各个特征的规模用厘米来衡量，有很多技术可以使用，尤其是用来测量组织中能量消耗变动情况的核磁共振成像技术。 This lets researchers see which bits of the brain are active in particular tasks—as long as those tasks can be performed by a person lying down inside a scanner. 该技术可使研究人员找出在完成具体的任务时，大脑的哪些部分处于活跃状态。At the other end of the scale, where features are measured in microns, lots of research has been done on how individual nerve cells work, how messages are sent from one to another, and how the connections between cells strengthen and weaken as memories are formed. 而另一个度量的层次则要求用微米来测量各种特征，这一层次的研究很多都是关于单个神经细胞是如何工作的、信息在神经细胞之间是如何传递的以及当产生记忆的时候神经细胞之间的联系是如何得到加强和减弱的。 Between these two, though, all is darkness. 然而，位于这两个层次之间的研究还处于一片漆黑当中。 It is like trying to navigate America with an atlas that shows the states, the big cities and the main highways, and has a few street maps of local neighbourhoods, but displays nothing in between.

2020年中考英语阅读理解专题练习《热点话题》(含答案)

2020年中考英语阅读理解专题练习《热点话题》新科技 Passage1(2019台州) Brooke wanted a doll house and some sugar cookies. So the 6yearold asked Alexa to get them. Alexa wasn't her mom or babysitter. It was a voiceactivated home assistant powered by AI(人工智能). And it made Brooke's wishes come true. A few days later, much to her parents' surprise, a $170 dollhouse and four pounds of cookies showed up. They ate the cookies and gave away the dollhouse to a local hospital. And that's not the end of the story. When a news reporter told the story of what happened on TV, Alexa devices(设备)in many listeners' homes woke up and tried to order dollhouses! Alexa isn't the only AI willing to serve you. Apple Homepod has Siri, Google Home has its Assistant, and the upcoming Galaxy Home device will have Bixby. People who have these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report from The Information, nowadays voice shopping is rare. But many scientists predict a boom(增长) in voice shopping in the near future. Is that a good thing ________. You can shout out an order as soon as you think of it, even if you are cooking, cleaning, o r driving. In addition, people with disabilities who are unable to use a keyboard or mouse can shop without any help. But voice shopping has its disadvantages. Unwanted dollhouses aren't the biggest problem. It's usually very easy to cancel an order or return products. The thing t hat worries some people is that these assistants are always listening. They have to be able to respond when you want them. So they listen for “Alexa” or “OK Google” or another order. When they hear it, they start recording the conversation. Some have worried about what happens to these recordings. Should companies be allowed to use them to learn about people's shopping habits And what if someone hacks(入侵) the device The CIA found a way to hack smart TVs to turn them into spies that listen all the time. Others could do the same with any smart device. What do you think Are you ready to start voice shopping ( )1. From the passage, we know that Alexa ________． A. can look after the baby B. can cook delicious food C. is a toy doll sold online D. is one kind of AI device ( )2. The underlined word “rare” in Paragraph 2 probably means ________． A. unusual B. expensive C. harmful D. impossible ( )3. Which of the following is the best to fill in the “________” in Paragraph 3 A. Convenience is the main advantage of voice shopping B. The cost of voice shopping is lower than other ways C. The popularity of voice shopping is increasing D. The technology of voice shopping needs improving ( )4. Paragraph 4 mainly tells us that ________ when people try voice shopping. A. AI sometimes forgets people's orders B. personal information might be hacked C. it's difficult to cancel or return products D. the needs for products can't be satisfied Passage2(2019宿迁) Technology is developing fast and it has become an important part of our life. Then what will

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经济学人中英对照Brave new words

Central banks 各国央行 Brave new words 大胆新言论 Rich-world central banks explore more doveish strategies 发达国家央行探索更加温和的政策 FOR four years rich-world central banks have done their best to rejuvenate economies with conventional and unconventional monetary policy. Now, with short-term interest rates still stuck near zero and their balance-sheets stuffed with government bonds, the central banks of America, Britain and Japan are experimenting with a shift in approach: coupling monetary action with commitments designed to alter the public’s expectati ons of interest rates, inflation and the economy. The sense of change is reinforced by the prospect of new leaders at the Japanese and British central banks, and the increasing prominence of several doves at America’s. 4年来，发达国家央行为经济复苏想尽了一切办法，常规和非常规货币政策你方唱罢我登场。时至今日，短期利率依然近乎于零，资产负债表上依然满是政府债券。美国、英国和日本央行正在尝试改变路线：为了改变公众对于利率、通胀和经济前景的预期，他们做出一系列承诺，并将货币政策与承诺相结合。日本和英国央行新领导人即将走马上任，加上美国几位鸽派人物的声音日益突出，使改变即将到来的感觉愈发强烈。 A more doveish stance would entail tolerating higher inflation, at least temporarily, in pursuit of higher output: a significant shift given the primacy central banks have long given to low inflation. Bond investors have begun to price in higher inflation (see chart). But just how far each central bank is prepared to go is still uncertain. 为了提高产值，更加温和的政策意味着必须要容忍更高水平的通胀，至少短期内会是如此：央行长期以来将低通胀率视为第一要务的政策即将迎来重大改变。一些大胆的投资人已经开始以更高的通胀率定价（见图）。但是各国央行的新政力度到底有多大尚不得而知。 In Japan, Shinzo Abe, the prime minister, has used the term “regime change” to describe the Bank of Japan’s (BoJ’s) agreement to raise its inflation targe t to 2% from 1%, and pursue it with unlimited asset purchases. There are expectations for even more forceful action once Masaaki Shirakawa, the current governor, and his two deputies depart on March 19th. Under Mr Shirakawa the BoJ bought lots more assets, but critics said he undercut the positive impact by repeatedly saying they were not enough to end deflation and by restricting the maturity of bonds the bank bought. 日本首相安倍晋三曾以“制度改革”一词来形容日本央行的政策变化。日本央行同意将通胀目标从1%提高到2%，并表示为了实现这一目标资产收购将不设上限。有人预期现任行长白川方明和两位副行长3月19日离任之后，会有力度更大的政策出台。白川在任期间日本央行购入了大量资产，但是有人批评到，由于白川经常强调购入的资产数量仍不足以结束通货紧缩，而且对买入债券的期限种类

2019年中考英语阅读理解真题专项训练(热点话题)

2019年中考英语阅读理解真题汇编 (带详细解析过程) (名师精讲解题方法与技巧+实战训练，建议下载练习) 【考点分析】阅读理解旨在考查学生阅读、理解的能力。近几年来，中考英语题中的阅读理解材料新颖，题材丰富，考查学生综合推断能力、根据语篇猜单词意思的能力的力度加大，考查学生关注细节的能力占很大部分。所以学生往往要么没能正确理解语篇中某些句子的意思，在细节题上丢分，要么就是对语篇的整体把握不够，在综合题或者推断题方面丢分。那么到底怎么做好阅读理解这一题型呢？一、解题思路（一）先读问题，弄清考查要点，以便能带着问题看文章，这样会心中有数，有的放矢。（二）快速浏览全文，掌握全貌，注意发现与问题有关的信息，如果时间紧，至少要扫视一下起首段和尾段。再把标题和文章内容结合起来想一想，这样全文大意便清楚了。此时，不要忙于答题。（三）细读原文，捕捉相关信息词，掌握短文细节内容。这是解题的关键，应特别注意以下几点： 1．抓住四个"W"和一个"H"，就是边读边用铅笔做些标记，把What (事件)，When （时间），Where（地点），Why（原因），How（经过）划出来。抓住了四个“W”和一个“H”，就抓住了文章的全貌，一些直接性的问题便可解决。 2．抓住连接词及起关键作用的副词、代词、介词、插入语等。因为这些词具有因果，让步，递进，转折，指代，列举及承上启下等各种连接上下文的特殊功能。这对考生分清文章层次，辨明各种关系，了解人物心理，推断作者意图，进行逻辑推理等手段来分析难点，都具有举足轻重的作用。 3．注意领会文章的寓意。

4．根据题意，初选答案。这一步须仔细审题，领会测试要求，确定解题方法。对那些明显的，有把握的题可以断然确定，不必把其余三个答案再作推敲而浪费时间：有些略难的题，应再查阅短文（不是重读一遍），迅速找出依据，予以排除。常用的解题方法有如下几种： ①直接解题法。即从原文中直接找出答案。 ②归纳解题法。对于不能从原文中直接找出答案的可在把握全文中心和线索的前题下进行概括、归纳得出正确答案。 ③综合推理法。读者需统观全文，认真分析，综合推理及至计算，最后归纳出正确答案。题干中有"suggest, conclude, conclusion, probably, reason, because, according to“等字眼时，属于推断概括型，考查内容着眼于全篇，考生应具备一定的分析归纳，推理等逻辑思维能力。 ④捕捉关键词。在阅读时应该注意与问题相关的同义词，近义词，反义词或同位词等信息词来得出正确答案。 ⑤转换解题法。即原文这么说，而在问题和所给选项中则用另外的词去转换一种说法，但仍表示同一含义。 ⑥排除法。根据语言，句法结构，信息词和常识，在没有把握的选项中用排除法得出正确答案。四、重读原文，仔细斟酌核对答案。在解完最后一道题后，如果时间允许，再将原文读一遍；用全文的主题思想统率各思考题，研究其内在联系和逻辑关系，目的在于对所做答案进一步审查，推出未解答的题，以便减少失误。

经济学人

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15年每周经济学人报刊中英文对照讲课讲稿

15年每周经济学人报刊中英文对照

空气污染英国需要采取更多措施来净化污浊的空气 Air pollution空气污染The big smoke雾都 Britain needs to do more to clean up its dirty air 英国需要采取更多措施来净化污浊的空气VISITING Oxford Street, a road teeming with tatty shops and overcrowded with people, is plainly a trial. Less plainly, levels of nitrogen dioxide (NO2), a noxious gas, have been found to be around three times higher there than the legal limit. In 2013 the annual mean concentration of NO2 on the street was one of the highest levels found anywhere in Europe. 来到牛津街，你会看到街道两边布满了各式杂乱的商店，而道路上人满为患。行走在这条街上，很明显是个磨练。不为人觉察的是，这里有毒气体二氧化氮(NO2)测出含量超出法定水平的约三倍以上。２０１３年，这条街的NO2年均浓度是欧洲最高之一。 British air is far cleaner than it was a few decades ago. Fewer people use coal-burning stoves; old industrial plants have been decommissioned. But since 2009 levels of nitrogen oxides and particulate matter, coarse or fine particles that are linked to lung cancer and asthma, have fallen more slowly. The exact number of deaths caused by dirty air is unknown. But in 2010 a government advisory group estimated that removing man-made fine particulate matter from the atmosphere would increase life expectancy for those born in 2008 by an average of six months. 英国的空气比几十年前干净多了。使用燃煤炉灶的人越来越少；老工业厂已经停产。但自2009年起，氧化氮、微粒物质、以及与肺癌和哮喘相关的粗、细颗粒含量的下降速度减慢了。因污浊空气所引发的死亡人数是未知的。但2010年，一个政府顾问组估算如果将大气中人为造成的微粒物质除去的话，2008年的出生人口人均寿命将增加六个月。 Much of the slowdown is the result of fumes from diesel cars, which were championed by successive governments because they use less fuel and thus produce less carbon dioxide than petrol cars. In 2001 only 14% of all cars ran on diesel; by 2013 the proportion had increased to 35%. (Greener “hybrid” and electric cars have increased ninefold since 2006, but account for just 0.5% of the entire fleet.) Second-hand cars are particularly noxious, but even newer ones have not been as clean as hoped. Many cars that belched out few pollutants in tests produced more when on the roads. 下降速度放缓的大部分原因在于柴油汽车排放的尾气—这为历任政府所支持，因为柴油汽车耗用更少的能源，比汽油汽车排放更少的二氧化碳。2001年，仅14%的汽车使用柴油。2013年，这个比例上涨到了35%。（更绿色的“混合动力”和电瓶车自2006年以来增加了九倍，但仅占汽车总量的0.5%。）二手汽车尤其有害，但新车也没所期望的那样清洁。很多车在污染物排放测试中排放量低，车在上路时却排放了更多。 Climate change and geoengineering气候变化与地质工程学Fears of a bright planet 地球发光，令人担心Experiments designed to learn more about ways of geoengineering the climate should be allowed to proceed为更好地利用工程学手段研究气候问题所设计的实验应该获准进行下去。SHINY things absorb less heat when left in the sun. This means that if the Earth could be made a little shinier it would be less susceptible to global warming. Ways to brighten it, such as adding nanoscale specks of salt to low clouds, making them whiter, or putting a thin haze of particles into the stratosphere, are the province of “geoengineering”. The small band of scientists which have been studying this subject over the past decade or so have mostly been using computer models. Some of them are now proposing outdoor experiments—using seawater-fed sprayers to churn out particles of the exact size needed to brighten clouds, or spewing sulphur particles from underneath a large balloon 20km up in the sky.发光的物体放在太阳下面会吸收较少的热量。这就意味着如果让地球发一点光的话，受到全球变暖的影响就会小一些。让地球发光的方式，比方说在低空云层上添加纳米级的盐微粒，让云变得更白，或者是将一层薄的雾状物洒向平流层，这些都属于地质工程学的范畴。过去十年左右研究这一领域的一小批科学家主要使用计算机模型，其中一些人现在提出要做室外实验――就是用装有

2018届高三英语话题阅读话题《热门话题》学案含答案

Topic Topical issues Reading Class：Name：Group：No： Learning Objectives： 1.Review the important words and expressions in the reading material: 2. Learn the reading skills: scanning and skimming Learning Key Points： 1.Grasp the important words and expressions in the reading material 2.Master the reading skills: scanning and skimming Learning Difficult Points： Improve the reading ability Learning Procedures： I.【Pre-class homework】 Read the passage and choose the best answer (1) T he first Earth Day in 1970, Americans have gotten a lot ―greener‖ toward the environment（环境）. ―We didn’t know at that time there even was an environment, let alone that there was a problem with it,‖ says Bruce Anderson, president of Earth Day USA. But what began as nothing important in public affairs has grown into a social movement. Business people, political leaders, university professors, and especially millions of grass-roots Americans are taking part in the movement. ―The understanding has increased many, many times,‖ says Gaylord Nelson, the former governor from Wisconsin, who thought up the first Earth Day. According to US government reports, emissions（排放）from cars and trucks have dropped from 10.3 million tons a year to 5.5 tons .The number of cities producing CO beyond the standard has been reduced from 40 to 9 .Although serious problems still remain and ne ed to be dealt with , the world is a safer and healthier place .A kind of ―Green thinking ‖ has become part of practices . Great improvement has been achieved .In 1988 there were only - 1 -

2017年中考英语阅读理解和完形填空最新热点预测12篇

2017年中考英语阅读理解和完形填空最新热点预测12篇阅读理解 Passage 1 Since last year, city streets around China have seen colorful shared bikes, which people can rent with a smart phone app and then park wherever they choose. To reduce traffic jams and air pollution, many cities have offered bike-sharing. But sometimes, dreams can turn sour. As shared bikes become more popular, problems keep showing up. According to news reports, shared bikes are badly treated by users. When people are using the bike, some of them just throw it onto streets and even into ditches(水沟). Some bikes are stolen. Recently, a man in Shanghai was fined (罚款)1,000 yuan for stealing a shared bike. Besides, the damage to the QR codes on the bikes has brought huge losses to bike-sharing companies, like Mobike. If the QR code is damaged, the bike cannot be used any more. It can take several hundred yuan for the company workers to find a lost bike and get it repaired. Mobike has 100 credit (信用) scores for each user. Penalty (惩罚)points will be taken in case of users? bad behaviors. Once the score drops to below 80, bike rental will go up to five yuan per 30 minutes. However, punishment may not be the best way to stop shared bikes from being stolen or damaged. Bike-sharing services will work well only if people follow the rules and show respect for the bikes and other users. 1. Why do many cities have offered bike-sharing? A.To provide convenience to travelers. B. To reduce traffic jams and air pollution. C. To make money for the company by renting. D. To encourage more people to excise by riding. 2. If Mr. Li credit scores is 80, he should pay for _____ his one hour?s riding shared Mobike. A. five Yuan B. eighty Yuan C. ten Yuan D. fifteen Yuan