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2013年7月6日雅思阅读考题回顾 2

2013年7月6日雅思阅读考题回顾 2
2013年7月6日雅思阅读考题回顾 2

2013年7月6日雅思阅读考题回顾

来源:朗阁培训中心编辑:xm 发布日期:2013-07-12 摘要:厦门朗阁培训中心为烤鸭们整理了7月6日雅思阅读考题回顾以及备考建议。考试日期:2013年7月6日

Reading Passage 1

Title:购物网站

Question types:True / False / Not Given; Sentence Completion

文章内容回顾一个成功的英国网上购物网站,主要卖服饰,时尚服饰,化妆品。cosmetics=make-up

products还有male clothes

相关英文原文阅读The internet boom of the late 1990s made price comparison profitable. Price comparison services were initially implemented as client-side add-ins to the Netscape and Internet explorer browsers, and required that additional software be downloaded and installed. After these initial efforts, comparison shopping migrated to the server so that the service would be accessible to anyone with a browser. Services which are now offered by websites dedicated to price comparison and by major portals.

Shopping

In the late 1990s, as more people gained access to the internet, a range of shopping portals were built that listed retailers for specific product genres. Retailers listed paid the website a fixed fee for appearing. These were little more than an online version of the Yellow Pages. As technology has improved, a newer "breed"

of shopping Web portals is being created that are changing both the business model and the features and functionality offered. These sites do not "aggregate" data-feeds provided from the retailers, they search and retrieve the data directly from each retailer site. That allows for a much more comprehensive list of retailers and the ability to update the data in real time. Generic portals and search engines launched similar services and companies that stood to benefit from increased internet shopping (especially credit card and delivery firms) launched similar sites.

Services

Through 1998 and 1999, various firms developed technology that searched retailers websites for prices and stored them in a central database. Users could then search for a product, and see a list of retailers and prices for that product. Advertisers did not pay to be listed, but paid for every click on a price. Streetprices, founded in 1997, has been a very early company in this space; it invented price graphs and email alerts in 1998.These useful services let users see the high and low price of any product graphed over time, and request email alerts when a product's price drops to the price the user wants. Other price search engines have also evolved to provide consumers sophisticated price-tracking tools, such as price drop alerts and price history tracking.

From 2004 onwards, home utility comparison services started gaining popularity in the UK, with the launch of several utility comparison sites, who have now grown into multi-million turnover corporations, including https://www.sodocs.net/doc/7e1242870.html,, Consumer Choices, https://www.sodocs.net/doc/7e1242870.html,, my Supermarket and USwitch.

题型难度分析相对简单

题型技巧分析本篇有填空题,填空题的做题步骤:

1.读题目要求,主要看字数要求,一般不超过三个或两个,一定要看清楚

2.读题目,并划出关键词,关键词首先是特殊的比如人名地名时间数字等,如果没有这些词,那就划出名词

3.对所填的空进行预测,预测所填空的词性,单复数情况

4.根据划出的关键词去文中定位

5.对定位部分进行分析,选出答案

是非无判断题是雅思阅读考试的经典题型,首先应该注意看清是TRUE还是YES,本篇是TRUE / FALSE/ NOT GIVEN。

解题步骤:

1.速读问题的句子,找出考点词(容易有问题的部分)。考点词:比较级,最高级,数据(时间),程度副词,特殊形容词,绝对化的词(only, most, each, any, every, the same as等)

2.排除考点词,在余下的词中找定位词,去原文定位。

3.重点考察考点词是否有提及,是否正确。

TRUE的原则是同义替换,至少有一组近义词。

FALSE是题目和原文截然相反,不可共存,通常有至少一组反义词。NOT GIVEN原文未提及,不做任何推断,尤其多考察题目的主语等名词在原文中是否有提及。

剑桥雅思推荐原文练习剑4 Test 1 Passage 1剑5 Test 3 Passage 1

Reading Passage 2

Title:一种快灭绝的鸟的保护建设

Question types:Heading; Short Answer Questions; Sentence Completion

文章内容回顾

关于英国一种快灭绝的珍贵的鸟的保护建设,鸟的食物来源,如何保护,

取得的成绩。

相关英文原文阅读The oozlum bird, also spelled ouzelum, is a legendary creature found in Australian and British folk tales and legends. Some versions have it that, when startled, the bird will take off and fly around in ever-decreasing circles until it manages to fly up itself, disappearing completely, which adds to its rarity.[1] Other sources state that the bird flies backwards so that it can admire its own beautiful tail feathers, or because while it does not know where it is going, it likes to know where it has been.

The Oxford English Dictionary describes it as "A mythical bird displaying ridiculous behaviour" and speculates that the word could have been suggested by the wordouzel, meaning a blackbird (turdus merula). The earliest citation recorded by the dictionary dates from 1858.

A variant of the oozlum, possibly a mutation, is the weejy weejy bird, which has only one wing which causes it to fly in tighter, faster, smaller circles until it disappears up its own fundament. The oozlefinch is an American relative without feathers that flies backwards ("to keep dust, trivia, and other inconsequentia out of his eyes") at supersonic speeds, and preys on enemy bombers, which it rips from the sky. The oozlefinch has been adopted as the unofficial mascot of the United States Air Defense Artillery. The oozlum bird was the subject of the British 1970 film,Carry On

Up the Jungle. There was also a recurring joke in an episode of

the BBC radio comedy, The Navy Lark that Lt Commander Murray

(Stephen Murray) did not know what the oozlum bird was. Sub

Lieutenant Phillips (Leslie Phillips) suggested that when young,

oozlum birds fly straight, and it is only when they turn left that

the trouble starts.

The fabulous qualities of the oozlum bird is the subject of a poem

by W.T. Goodge (1862 – 1909). In the poem "The Oozlum Bird", the

bird is said to fly backwards and has the singular ability of being

able to fly up in the air while letting the earth turn under it.

The bird is said to be large enough to bear the weight of a man.题型难度分析给段落配标题稍难

题型技巧分析Heading题型做题步骤:

1.读题目要求,注意是将heading前的序号写在答题卡上。

2.划去Example项,在Lists of headings中将例子的标题划去,同时将对应段落在文章中划去,以免做题时重复找。

3.在给出的标题中划出关键词,以名词为主

4.读文章段落,主要读段首和段尾,找出主题句

5.将段落主题句和标题相比较,选出答案

注意事项:

1.在找主题句的时候,段首不一定是段落的第一句,很多时候尤其是第二段及以后的段落第一句往往是对上一段的概括,第二句第三句才是主题句

2.如果本段有however,but等转折词汇以及also,although等,主题句即作者的中心在其后面

3.如果某段中重复出现标题中的某个关键词,也可以判定此段的标题即

是含有这个关键词的标题

剑桥雅思推荐原文练

剑3 Test 4 Passage 1

Reading Passage 3

Title:人类语言的出现和发展

Question types:Matching; True / False / Not Given

文章内容回顾关于人类语言的形成理论,2个理论,语言形成的时间。

英文原文阅读Language development is thought to proceed by ordinary processes of learning in which children acquire the forms, meanings and uses of words and utterances from the linguistic input. The method in which we develop language skills is universal however, the major debate is how the rules of syntax are acquired. There are two major approaches to syntactic development, an empiricist account by which children learn all syntactic rules from the linguistic input, and a nativist approach by which some principles of syntax are innate and are transmitted through the human genome.

The nativist theory, proposed by Noam Chomsky, argues that language is a unique human accomplishment. Chomsky says that all children have what is called an LAD, an innate language acquisition device. Theoretically, the LAD is an area of the brain that has a set of universal syntactic rules for all languages. This device provides children with the ability to construct novel sentences using learned vocabulary. Chomsky's claim is based upon the view that what children hear - their linguistic input - is insufficient to explain how they come to learn language. He argues that linguistic input

from the environment is limited and full of errors. Therefore, nativists assume that it is impossible for children to learn linguistic information solely from their environment. However, because children possess this LAD, they are in fact, able to learn language despite incomplete information from their environment. This view has dominated linguistic theory for over fifty years and remains highly influential, as witnessed by the number of articles in journals and books.

The empiricist theory suggests, contra Chomsky, that there is enough information in the linguistic input children receive and therefore, there is no need to assume an innate language acquisition device exists (see above). Rather than an LAD which evolved specifically for language, empiricists believe that general brain processes are sufficient enough for language acquisition. During this process, it is necessary for the child to be actively engaged with their environment. In order for a child to learn language, the parent or caregiver adopts a particular way of appropriately communicating with the child; this is known as child-directed speech (CDS). CDS is used so that children are given the necessary linguistic information needed for their language. Empiricism is a general approach and sometimes goes along with the interactionist approach.

Other researchers embrace an interactionist perspective, consisting of social-interactionist theories of language development. In such approaches, children learn language in the interactive and communicative context, learning language forms for meaningful moves of communication. These theories focus mainly on the caregiver's attitudes and attentiveness to their children in order to promote productive language habits.

An older empiricist theory, the behaviorist theory proposed by B.

F. Skinner suggested that language is learned through operant

conditioning, namely, by imitation of stimuli and by reinforcement

of correct responses. This perspective has not been widely accepted

at any time, but by some accounts, is experiencing a resurgence.

New studies use this theory now to treat individuals diagnosed with

autism spectrum disorders. Additionally, Relational Frame Theory

is growing from the behaviorist theory which is important for

Acceptance and Commitment Therapy. Some empiricist theory accounts

today use behaviorist models.

Other relevant theories about language development include

Piaget's theory of cognitive development, which considers the

development of language as a continuation of general cognitive

development[5] and Vygotsky's social theories that attribute the

development of language to an individual's social interactions and

grow

题型难度分析配对题较难,给文章中讲到的两个理论配信息。

题型技巧分析Matching题分为了一方是特殊定位词的配对,分类题,段落配标题,段落细节信息定位。一方是特殊定位词的配对主要有人名配观点,时间配事件,地点配事件。这种题目在做的时候要注意以下几点:

1.审题,读Instruction。一般来说,都会有You may use any letter more than once.遇到这行字时,提醒考生一般本题中肯定会有一个字母用两次,而且只有一个字母会重复。

2.迅速浏览人名,在文章中圈出人名。

3.通读配对的另一方,划出关键词。

4.在文章中圈出的人名旁找相应信息与关键词进行匹配。

一方不是特殊定位词时,需要将配对双方都通读,并划出核心词汇,以名

词为主。同时这类型题要放在本篇文章的最后做。

剑4 Test 3 Passage 1

剑桥雅思推荐原文

练习

2015年雅思阅读模拟试题及答案解析三

Time to cool it 1 REFRIGERATORS are the epitome of clunky technology: solid, reliable and just a little bit dull. They have not changed much over the past century, but then they have not needed to. They are based on a robust and effective idea--draw heat from the thing you want to cool by evaporating a liquid next to it, and then dump that heat by pumping the vapour elsewhere and condensing it. This method of pumping heat from one place to another served mankind well when refrigerators' main jobs were preserving food and, as air conditioners, cooling buildings. Today's high-tech world, however, demands high-tech refrigeration. Heat pumps are no longer up to the job. The search is on for something to replace them. 2 One set of candidates are known as paraelectric materials. These act like batteries when they undergo a temperature change: attach electrodes to them and they generate a current. This effect is used in infra-red cameras. An array of tiny pieces of paraelectric material can sense the heat radiated by, for example, a person, and the pattern of the array's electrical outputs can then be used to construct an image. But until recently no one had bothered much with the inverse of this process. That inverse exists, however. Apply an appropriate current to a paraelectric material and it will cool down. 3 Someone who is looking at this inverse effect is Alex Mischenko, of Cambridge University. Using commercially available paraelectric film, he and his colleagues have generated temperature drops five times bigger than any previously recorded. That may be enough to change the phenomenon from a laboratory curiosity to something with commercial applications. 4 As to what those applications might be, Dr Mischenko is still a little hazy. He has, nevertheless, set up a company to pursue them. He foresees putting his discovery to use in more efficient domestic fridges and air conditioners. The real money, though, may be in cooling computers. 5 Gadgets containing microprocessors have been getting hotter for a long time. One consequence of Moore's Law, which describes the doubling of the number of transistors on a chip every 18 months, is that the amount of heat produced doubles as well. In fact, it more than doubles, because besides increasing in number,the components are getting faster. Heat is released every time a logical operation is performed inside a microprocessor, so the faster the processor is, the more heat it generates. Doubling the frequency quadruples the heat output. And the frequency has doubled a lot. The first Pentium chips sold by Dr Moore's company,Intel, in 1993, ran at 60m cycles a second. The Pentium 4--the last "single-core" desktop processor--clocked up 3.2 billion cycles a second. 6 Disposing of this heat is a big obstruction to further miniaturisation and higher speeds. The innards of a desktop computer commonly hit 80℃. At 85℃, they

2014年雅思阅读模拟试题及答案解析(6)

1. A European spacecraft took off today to spearhead the search for another "Earth" among the stars. 2. The Corot space telescope blasted off aboard a Russian Soyuz rocket from the Baikonur cosmodrome in Kazakhstan shortly after 2.20pm. 3. Corot, short for convection rotation and planetary transits, is the first instrument capable of finding small rocky planets beyond the solar system. Any such planet situated in the right orbit stands a good chance of having liquid water on its surface, and quite possibly life, although a leading scientist involved in the project said it was unlikely to find "any little green men". 4. Developed by the French space agency, CNES, and partnered by the European Space Agency (ESA), Austria, Belgium, Germany, Brazil and Spain, Corot will monitor around 120,000 stars with its 27cm telescope from a polar orbit 514 miles above the Earth. Over two and a half years, it will focus on five to six different areas of the sky, measuring the brightness of about 10,000 stars every 512 seconds. 5. "At the present moment we are hoping to find out more about the nature of planets around stars which are potential habitats. We are looking at habitable planets, not inhabited planets. We are not going to find any little green men," Professor Ian Roxburgh, an ESA scientist who has been involved with Corot since its inception, told the BBC Radio 4 Today programme. 6. Prof Roxburgh said it was hoped Corot would find "rocky planets that could develop an atmosphere and, if they are the right distance from their parent star,they could have water". 7. To search for planets, the telescope will look for the dimming of starlight caused when an object passes in front of a star, known as a "transit". Although it will take more sophisticated space telescopes planned in the next 10 years to confirm the presence of an Earth-like planet with oxygen and liquid water, Corot will let scientists know where to point their lenses.

雅思阅读模拟试题-音乐

雅思阅读模拟试题:音乐 Background music may seem harmless, but it can have a powerful effect on those who hear it. Recorded background music first found its way into factories, shop and restaurants in the US. But it soon spread to other arts of the world. Now it is becoming increasingly difficult to go shopping or eat a meal without listening to music. To begin with, “ muzak ” (音乐广播网) was intended simply to create a soothing (安慰) atmosphere. Recently, however, it’s become big business –thanks in part to recent research. Dr. Ronald Milliman, an American marketing expert, has shown that music can boost sales or increase factory production by as much as a third. But, it has to be light music. A fast one has no effect at all on sales. Slow music can increase receipts by 38%. This is probably because shoppers slow down and have more opportunity to spot items they like to buy. Yet, slow music isn’t always answered. https://www.sodocs.net/doc/7e1242870.html,liman found, for example, that in restaurants slow music meant customers took longer to eat their meals, which reduced overall sales. So restaurants owners might be well advised to play up-tempo music to keep the customers moving – unless of course, the resulting indigestion leads to complaints! ( )1. The reason why background music is so popular is that ______. A. it can have a powerful effect on those who hear it B. it can help to create a soothing atmosphere C. it can boost sales or increase factory production everywhere D. it can make customers eat their meals quickly ( )2. Background music means ________. A. light music that customers enjoy most B. fast music that makes people move fast C. slow music that can make customers enjoy their meals D. the music you are listening to while you are doing something ( )3. Restaurant owners complain about background music because ______. A. it results in indigestion B. it increases their sales C. it keeps customers moving D. it decreases their sales ( )4. The word “ up-tempo music” probably means_____. A.slow music B.fast music C.light music D.classical music

英语二2011年七月真题及答案

2011年7月高等教育自学考试全国统一命题考试 英语(二)试卷 I. Vocabulary and. Structure (10 points, 1 point each) 从下列各句四个选项中选出一个最佳答案,并在答题卡上将相应的字母涂黑。 1 .Students should_____their own interests as well as do their schoolwork. A. persuade B .pursue C. persist D.proceed 2. I'd like to remind you that there is no_____on the part of suspects to answer questions. A. obligation B.evidence C.transaction D.motivation 3. He blamed his poor performance_____jet lag. A.to B .for C.on D.at 4 .We_____knowledge from our families,schools,jobs,and the mass media. A.request B.require C.inquire D.acquire 5. Not until recently_____that Thompson had ben telling the truth all along. A.I realized B.did I realize C.I did realize D.realized I 6. I don’t need any help at the moment,but I_____your offer. A.appreciate B.admire C.enjoy D.like 7 .The sad condition of women working as house servants around the world received much media_____early this year. A .importance B. attention C.significance D.popularity 8 .She has no hostility to us, _____can be judged from her eyes. A. that B.and C.hence D.as 9 .When you're_____ a crisis, it often helps to talk to someone. A.going through B.going in for C.going after D.going over 10.Decision on whether the message is right or wrong should at least come after _____what the message is. A.putting out B.turning out C.working out D.running out II. Cloze Test (10 points,1 point each) 下列短文中有十个空白,每个空白有四个选项。根据上下文要求选出最佳答案,并在答题卡上将相应的字母涂黑。 People in all parts of the world are observing "No Tobacco Day". It is the day 11 the World Health Organization (WHO) appeals to people to stop using tobacco products. WHO hopes if people stop smoking cigarettes or 12 tobacco for one day, they will stop permanently. Health experts have warned for years that smoking can lead to heart disease, cancer and other

雅思阅读模拟试题及答案解析(2)

雅思阅读模拟试题及答案解析(2)

Next Year Marks the EU's 50th Anniversary of the Treaty A. After a period of introversion and stunned self-disbelief,continental European governments will recover their enthusiasm for pan-European institution-building in . Whether the European public will welcome a return to what voters in two countries had rejected so short a time before is another matter. B. There are several reasons for Europe’s recovering self-confidence. For years European economies had been lagging dismally behind America (to say nothing of Asia), but in the large continental economies had one of their best years for a decade, briefly outstripping America in terms of growth. Since politics often reacts to economic change with a lag,’s improvement in economic growth will have its impact in , though the recovery may be ebbing by then. C. The coming year also marks a particular point in a political cycle so regular that it almost seems to amount to a natural law. Every four or five years, European countries take a large stride towards further integration by signing a new treaty: the Maastricht treaty in 1992, the Treaty of Amsterdam in 1997, the Treaty of Nice in . And in they were supposed to ratify a European constitution, laying the ground for yet more integration—until the calm rhythm was rudely shattered by French and Dutch voters. But the political impetus to sign something every four or five years has only been interrupted,not immobilised, by this setback. D. In the European Union marks the 50th anniversary of another treaty—the Treaty of Rome, its founding charter. Government leaders have already agreed to celebrate it ceremoniously, restating their commitment to “ever closer union” and the basic ideals of European unity. By itself, and in normal circumstances, the EU’s 50th-birthday greeting to itself would be fairly meaningless, a routine expression of European good fellowship. But it does not take a Machiavelli to spot that once governments have signed the declaration (and it seems unlikely anyone would be so uncollegiate as to veto

2019年雅思阅读模拟试题:流程图题(1)

2019年雅思阅读模拟试题:流程图题(1) BAKELITE The birth of modern plastics In 1907, Leo Hendrick Baekeland, a Belgian scientist working in New York, discovered and patented a revolutionary new synthetic material. His invention, which he named 'Bakelite,’was of enormous technological importance, and effectively launched the modern plastics industry. The term 'plastic' comes from the Greek plassein, meaning 'to mould'. Some plastics are derived from natural sources, some are semi-synthetic (the result of chemical action on a natural substance), and some are entirely synthetic, that is, chemically engineered from the constituents of coal or oil. Some are 'thermoplastic', which means that, like candlewax, they melt when heated and can then be reshaped. Others are 'thermosetting': like eggs, they cannot revert to their original viscous state, and their shape is thus fixed for ever. Bakelite had the distinction of being the first totally synthetic thermosetting plastic. The history of today's plastics begins with the discovery of a series of semi-synthetic thermoplastic materials in the mid-nineteenth century. The impetus behind the development of these early plastics was generated by a number of factors—immense technological progress in the domain of chemistry, coupled with wider cultural changes, and the pragmatic need to find acceptable substitutes for dwindling supplies of 'luxury' materials such as tortoiseshell and ivory.

2013年7月英语2真题

山东省2013年7月高等教育自学考试 英语(二)试卷[14学分] (课程代码:0015 考试时间:150分钟) 本试卷分为两部分,第一部分为选择题,第二部分为非选择题;选择题50分,非选择题50分,满分100分;考试时间150分钟。将全部答案写在答案纸的相应位置上,否则不计分。 PART ONE (50 POINTS) Ⅰ.Vocabulary and Structure (10 points, 1 point for each time) 在每小题列出的四个备选项中只有一个是符合题目要求的,请将其选出并将答案代码涂黑。错涂、多涂或未涂均无分。 1. The police offered ____for information about the stolen painting. A. a reward B. an award C. a profit D. a prize 2. Please let me know if any difficulties ____. A. arise B. have C. come D. happen 3. John knows the rule but does not know how to ____ it. A. guide B. direct C. apply D. manage 4. Jack drew a ____ sun and a pale moon in the same picture. A. bright B. light C. clear D. clean 5. You may not like Thomas, but he has his ____. A. merits B. good C. advantages D. feelings 6. It is ____ that no one feels like working. A. a so cold day B. such a cold day C. such cold a day D. a such cold day 7. The boy is quite well now, ____ a slight headache. A. besides B. except C. beside D. except for 8. If the United States had built more homes for poor people in 1955, the housing problems now in some parts of the country____ so serious. A. wouldn’t be B. wouldn’t have been C. will not be D. would have not been 9. John didn’t know the way to the station, so he stopped ____. A. to ask B. asking C. for asking D. to asking 10. It was not until he arrived at the station _____ he realized he had forgotten his ticket. A. there B. that C. then D. where Ⅱ.Cloze Test (10 points, 1 point for each item) 下面短文中有十个空白,每个空白有四个选项。请根据上下文要求选出最佳答案,并将答题卡的相应代码涂黑。 Good grades and a good job are easy to get. A good education is a _ 11 _ story. Her eyelids sank from lack of sleep, _ 12 _ Teresa’s exams were always perfect, her writings longer _ 13 _ required, and her math problems rewritten to ensure cleanness. She played the violin and the piano, volunteered _ 14 _ the hospital, participated in various school clubs and enjoyed none of them. It seemed that she was born to succeed and was more than willing to sacrifice _ 15 _ in the name of achievement. I watched her as her laughter stopped. And on Teresa’s graduation day, she _ 16 _ the valedictory medal, but her eyes were empty.

雅思阅读模拟试卷

ACADEMIC READING 60 minutes READING PASSAGE 1 You should spend about 20 minutes on Questions 1-13 which are based on Reading Passage 1 below. Striking Back at Lightning With Lasers Seldom is the weather more dramatic than when thunderstorms strike. Their electrical fury inflicts death or serious injury on around 500 people each year in the United States alone. As the clouds roll in, a leisurely round of golf can become a terrifying dice with death - out in the open, a lone golfer may be a lightning bolt's most inviting target. And there is damage to property too. Lightning damage costs American power companies more than $100 million a year. But researchers in the United States and Japan are planning to hit back. Already in laboratory trials they have tested strategies for neutralising the power of thunderstorms, and this winter they will brave real storms, equipped with an armoury of lasers that they will be pointing towards the heavens to discharge thunderclouds before lightning can strike. The idea of forcing storm clouds to discharge their lightning on command is not new. In the early 1960s, researchers tried firing rockets trailing wires into thunderclouds to set up an easy discharge path for the huge electric charges that these clouds generate. The technique survives to this day at a test site in Florida run by the University of Florida, with support from the Electrical Power Research Institute (EPRI), based in California. EPRI, which is funded by power companies, is looking at ways to protect the United States' power grid from lightning strikes. 'We can cause the lightning to strike where we want it to using rockets,' says Ralph Bernstein, manager of lightning projects at EPR!. The rocket site is providing precise measurements of lightning voltages and allowing engineers to check how electrical equipment bears up. Bad behaviour But while rockets are fine for research, they cannot provide the protection from lightning strikes that everyone is looking for. The rockets cost around $1,200 each, can only be fired at a limited frequency and their failure rate is about 40 per cent. And even when they do trigger lightning, things still do not always go according to plan. 'Lightning is not perfectly well behaved,' says Bernstein. 'Occasionally, it will take a branch and go someplace it wasn't supposed to go.' And anyway, who would want to fire streams of rockets in a populated area? 'What goes up must come down,' points out Jean-Claude Diels of the University of New Mexico. Diels is leading a project, which is backed by EPRI, to try to use lasers to discharge lightning safely and safety is a basic requirement since no one wants to put themselves or their expensive equipment at risk. With around $500,000 invested so far, a promising system is just emerging from the laboratory. The idea began some 20 years ago, when high-powered lasers were revealing. their ability to extract electrons out of atoms and create ions. If a laser could generate a line of ionization in the air all the way up to a storm cloud, this conducting path could be used to guide lightning to Earth, before the electric field becomes strong enough to break down the air in an uncontrollable surge. To stop the laser itself being struck, it would not be pointed straight at the clouds. Instead it would be directed at a mirror, and from

雅思阅读模拟试题精选

雅思阅读模拟试题精选

雅思阅读模拟试题精选 1. Washing, brushing and varnishing fossils — all standard conservation treatments used by many fossil hunters and museum curators alike —vastly reduces the chances of recovering ancient DNA. 2. Instead, excavators should be handling at least some of their bounty with gloves, and freezing samples as they are found, dirt and all, concludes a paper in the Proceedings of the National Academy of Sciences today. 3. Although many palaeontologists know anecdotally that this is the best way to up the odds of extracting good DNA, Eva-Maria Geigl of the Jacques Monod Institute in Paris, France, and her colleagues have now shown just how important conservation practices can be. This information, they say, needs to be hammered home among the

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