职称英语理工类阅读理解新增篇目_职称英语理工类阅读

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2011年职称英语理工类阅读理解

新增文章篇目(名师押题)第二篇 World Crude Oil Production May Peak a Decade Earlier Than Some Predict 第六篇 Waving With Light *第三十四篇 Batteries Built by Viruses *第三十八篇 Longer Lives for Wild Elephants +第四十五篇 Some People Do Not Taste Salt Like Others +第四十六篇 Marvelous Metamaterials

注：

1、+表示A级文章；*表示B即文章；其他为C级文章；

2、2011年词汇部分与2010年教材相比未作任何变化。

第二篇

World Crude Oil Production May Peak a Decade Earlier Than Some Predict

In a finding that may speed efforts to conserve oil, scientists in Kuwait predict that world conventional crude oil production will peak in 2014.This prediction is almost a decade earlier than some other predictions．Their study is in ACS’ Energy1＆Fuels．

Ibrahim Nashawi and colleagues point out that rapid growth in global oil consumption has sparked a growing interest in predicting “peak oil”．“Peak oil ”is the point where oil production reaches a maximum and then declines.Scientists have developed several models to forecast this point, and some put the date at 2020 or

2later.One of the most famous forecast models is called the Hubbert model.It aumes

3that global oil production will follow a bell shaped curve.A related concept is 4that of “Peak Oil.” The term “Peal Oil” indicates the moment in which world wide production Will peak, afterwards to start on irreversible decline．

The Hubbert model accurately predicted that oil production would peak in the United States in 1970.The model has since gained in popularity and has been used to forecast oil production worldwide．However, recent studies show that the model is insufficient to account for more complex oil production cycles of some countries．Those cycles can be heavily influenced by technology changes, politics, and other factors, the scientists say.The new study describes development of a new version of the Hubbert model that provides a more realistic and accurate oil production forecast．Using the new model, the scientists evaluated the oil production trends of 47 major oil-producing

6countries, which supply most of the world’s conventional crude oil． They estimated that worldwide conventional crude oil production will peak in 2014, years earlier

7than anticipated.The scientists also showed that the world's oil reserves are being reduced at a rate of 2.1 percent a year.The new model could help inform energy-related decisions and public policy debate, they suggest.词汇：

Conserve v． 保护，保存 crude oil原油

spark v．闪耀；激发；鼓舞 curve n．曲线

irreversible adj．不可逆的，不可改变的 insufficient adj.充分的，不足的

注释：

1．ACS' Energy & Fuels：ACS是American Chemical Society(美国化学学会)的缩写。该学会成立于l876年，现已成为世界最大的科技协会。多年来，ACS一直致力于为全球化学研究机构、企业及个人提供高品质的文献资讯及服务。ACS出版的期刊有34种，这些期刊在化学领域中是被引用次数最多的化学期刊，Energy＆Fuels即是其中一本。

2．the Hubbert model：赫伯特模型是美国地质学家M．King Hubbert于1956年创建的，这是一个随时间增长的模型，Hubbert将其引入油气田开发，经推导使其成为一个可以预测油气田累积产量、瞬时产量、年产量和可采储量等多项开发指标的多功能预测模型。3．a bell shaped curve：钟形曲线

4．that of peak oil：that指代concept。5．account for：说明，解释

6．conventional crude oil：常规原油

7．oil reserves：石油储量。通常使用复数形式reserves。

练习：

1．Which of the following is closest in meaning to the word “sparked” appearing in paragraph 2? A．flashed B．stimulated C．changed D．ended 2．The term “a bell shaped curve” appearing in paragraph 2 indicates that global oil production will A．take the shape of a flat curve． B．keep growing． C．keep declining．

D．start to decline after global oil production peaks． 3．Which of the following is NOT true of the Hubbert model? A．It succefully predicted that oil production peaked in the U．S．in l 970． B．It has been used to predict oil production in many countries．

C．It is insufficient to explain oil production cycles in some countries． D．It provides a very realistic and accurate oil production．

4．What is the major achievement of the new study mentioned in the last paragraph? A．It predicts global oil production will peak in 2014． B．It predicts oil production will decline in 47 countries． C．It confirms further the effectivene of the Hubbert model． D．It discovers a new trend of Worldwide oil production． 5．Who develop the new version of the Hubbert model? A．American scientists． B．Kuwaiti scientists． C．British scientists．

D．Scientists of 47 major oil-producing countries．

答案与题解：

1．B spark一词做及物动词使用时有“发动”、“激发”的意思，在此意为stimulated，即“引发”，这个句子的意思是：全球石油消费的快速增长已引发了对“石油峰值”预测的兴趣。2．D此句接下来的句子中所提到的a related concept即是与a bell shaped curve相关的概念，也就是说，接下来的这个句子对a bell shaped curve做了解释，即世界石油生产达到最大峰值后将下降。

3．D 文章的第三段告诉我们，Hubbert预测模型精确地预测到美国石油生产于1970年将达到峰值。这一模型自受到公认后，已用于预测世界石油生产。第四段说，这一模型对于某些国家更加复杂的石油生产周期而言，其计算尚不充分。这些生产周期受到技术的改变、政策和其他因素的很大影响。所以，A、B和C都是对Hubbert模型的正确说明。

4．A选项

8、C和D所述内容均未在文章中提到。最后一段告诉我们，科学家使用新的模型评估了47个主要的产油国家的石油生产趋势，并预计全球常规原油生产到2014年将达最高峰值。所以，A是答案。

5．B 短文第一段的第一个句子提供了答案。

第六篇

Waving With LightIn the Sierra Madre mountain range of west central Mexico, the native Huichol 2people live much the way their ancestors did--without electricity.That’s because

3it’s too expensive to string power lines to the remote mountain areas where they live.To help support themselves, the Huichol create beautiful artwork.They sell their art in cities hundreds of miles away from their villages.And without electricity--at home or on the road, they can only work during daylight hours.When it gets dark, they must stop whatever they’re doing.Now, a team of scientists, designers, and architects is using new technologies to provide the Huichol with light after the sun sets．The scientists’ technique involves weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items.By collecting the sun’s energy during the day, these lightweight fabrics provide bright white light at night．Their inventors have named the fabrics “Portable Lights.” Portable Lights have the potential to transform the lives of people without electricity around the world, says project leader Sheila Kennedy．

“Our invention,” Kennedy says, “came from seeing how we could transform technology we saw every day in the United States and move it into new markets for people who didn't have a lot of money．” At the core of Portable Light technology are devices called high-brightne

6light-emitting diodes，or HB LEDs．These tiny lights appear in digital clocks，televisions，and streetlights．

LEDs are completely different from the light bulbs．Most of those gla bulbs belong to a type called incandescent lights．Inside，electricity heats a metal coil to about 2，200 degrees Celsius．At that temperature，bulbs give off light we can see．

Ninety percent of energy produced by incandescent lights, however, is heat——and invisible．With all that wasted energy, bulbs burn out quickly．They are also easily broken．

LEDs，on the other hand，are like tiny pieces of rock made up of molecules that are arranged in a crystal structure．When an electric current paes through an LED，the crystal structure produces light．Unlike incandescent bulbs, they Can produce light of various colors．Within an LED, the type of molecules and their particular arrangement determines what color is produced．

词汇：

Portable adj．轻便的，手提式的light—emitting diode(LED)发光二极管 bulb n．灯泡；球状物 incandescent adj．白灼的 coil n．线圈，卷，圈

molecule n．分子

注释：

1．Sierra Madre mountain range of west central Mexico：墨西哥中西部的马德雷山脉o Sierra；一词在西班牙语中本身就包含了“山脉”的意思，确切地说是“呈齿状起伏的山脉”，因为在西班牙语中Sierra有“锯子”的意思。2．Huichol people：维克人。他们是居住在墨西哥中西部地区马德雷山脉的土著印地安人。该地区山路崎岖，所以西班牙人未涉足于此，墨西哥文化也没能影响维克人的土著文化。据估计，维克印地安人现仅存约一万人。3．string power lines：架设输电线。

4．Now，a team of scientists„is usin9：a team of scientists可以视作单数，也可以视作复数。本句用作单数，所以后接的谓语动词是is。

5．At the core of：此处the core of意为the basic or most important part of(最重要的部分)。

6．At the core of Portable Light technology are devices called high—brightne light—emitting diodes, or HB LEDs：本句是倒装句，主语是“devices called high—brightne light—emitting diodes，or HB LEDs”，谓语动词是“are”。high．brightne light．emitting diodes可译为“高亮度发光二极管。

练习：

1．To make a living, the Huichol create artwork and A．sell it to tourists in their villages．

B．sell it in cities far away from their villages． C．display it in their village museum．

D．keep it in their homes to attract tourists． 2．Why can Portable Lights emit light? A．Electronic crystals are woven into fabrics．

B．Items such as clothes and bags are used to carry lights． C．The sun's energy is collected during the day． D．All of the above．

3．What does Sheila Kennedy say about Portable Lights? A．This invention can change the lives of people，both rich and poor． B．They are widely used in the United States．

C．Portable Lights can help poor people around the world to get light． D．They are expensive to make but easy to carry．

4．What is the most important part of the Portable Light technology? A．HB LEDs B．Gla Bulbs．

C．Incandescent lights． D．Heated metal coils．

5．LEDs are different from light bulbs in that A．LEDs are incandescent lights while light bulbs are not． B．LEDs have a metal coil while light bulbs have not． C．LEDs emit colored light while most light bulbs don't．

D．LEDs are made up of tiny pieces of rock while light bulbs are not．

答案与题解：

1．B 短文的第一段提供了答案，该段告诉我们，维克人为了谋生，制作工艺品，并到几百英里以外的城市去销售。

2．D文章的第二和第三段包括了A、B和C所述内容。所以D是答案。

3．C 短文的第四和第五段提供了答案。短文第四段的句子说了Potable Lights可以在世界范围内改变穷乡僻壤用不上电的人们的生活，C准确地表达了这层意思，所以是答案0 A不是答案，说Potable Lights能改变富人穷人的生活，不符合原文的意思。短文没有提及Portable Lights在美国使用，也没有说Portable Lights是否花费很大。所以B和D都不是答案。4．A第六段的第一句提供了答案。Portable Lights技术的最主要部分是high—brightne light—emitting diodes，即高亮度发光二极管。

5．C短文的第六段对light bulbs进行了描述。第二句中的those gla bulbs即指第一句中的light bulbs。因此，LEDs不是incandescent lights(白炽灯)，也没有金属丝。所以A和B均是错误的选择。最后一段的第一个句子LEDs，on the other hand，are like tiny pieces of rock made up of molecules that are arranged in a crystal structure中的like pieces of rock，不等于 pieces。

*第三十四篇

Batteries Built by Viruses What do chicken pox，the common cold, the flu，and AIDS have in common? They’re all disease caused by viruses，tiny microorganisms that can pa from person to

1person．It's no wonder that when most people think about viruses, finding ways t0 2steer clear of viruses is what's on people's minds．Not everyone runs from the tiny disease carders, though．In Cambridge, 4Maachusetts, scientists have discovered that some viruses can be helpful in an unusual way．They are putting viruses to work, teaching them to build some of the world's smallest rechargeable batteries．

Viruses and batteries may seem like an unusual pair，but they're not so strange

5for engineer Angela Belcher，who first came up with the idea．At the Maachusetts Institute of Technology(MIT)in Cambridge, she and her collaborators bring together different areas of science in new ways．In the case of the virus-built batteries, the scientists combine what they know about biology, technology and production techniques． Belcher's team includes Paula Hammond，who helps put together the tiny batteries, and Yet-Ming Chiang，an expert on how to store energy in the form of a battery．“We’re working on things we traditionally don’t aociate with nature．” says Hammond．Many batteries are already pretty small．You can hold A．C and D batteries in your hand．The coin—like batteries that power watches are often smaller than a penny．However。every year，new electronic devices like personal music players or cell phones get smaller than the year before．As these devices shrink, ordinary batteries won't be small enough to fit inside．

The ideal battery will store a lot of energy in a small package．Right now，Belcher's model battery，a metallic disk completely built by viruses，looks like a regular watch battery．But inside，its components are very small—so tiny you can only see them with a powerful microscope．

How small are these battery parts? To get some idea of the size，pluck one hair from your head．Place your hair on a piece of white paper and try to see how wide your hair is—pretty thin，right? Although the width of each person's hair is a bit different，you could probably fit about l o of these virus—built battery parts，side to side，acro one hair．These microbatteries may change the way we look at 7viruses．

词汇：

chicken pox水痘

microorganism n．微生物 metallic adj．金属的collaborator n．合作者，协作者 pluck v．拔，摘，采

注释：

1．no wonder：不足为奇的，难怪 2．steer clear of：避开，绕开 3．though：意思为“然而，可是”。在句中使用时通常放在句末。4．Cambridge，Maachusetts：马萨诸塞州的剑桥市。本文第三段提到的the Maachusetts Institute of Technology(MIT)in Cambridge即指坐落于剑桥市的麻省理工学院。麻省理工学院于1861年由著名自然科学家威廉·巴罗吉杰斯创立。这是美国的一所私立研究型大学，培养高级科技人才和管理人才，是以理工科为主的、世界一流的综合性大学。5．came up with：提出

6．A，C and D batteries：A、C、D均为电池型号。

7．These microbatteries may change the way we look at viruses：这些微型电池可能会改变我们看待病毒的方式。作者想表达的意思是：人们一直认为病毒有害无益，现在病毒可用来制作电池，人们对病毒的看法可能会因此而发生变化。

练习：

1．According to the first paragraph，people try to A．kill microorganisms related to chicken pox，the flu，etc． B．keep themselves away from viruses because they are invisible．

C．stay away from viruses because they are causes of various diseases． D．cure themselves of virus—related diseases by taking medicines． 2．What is Belcher's team doing at present? A．It is finding ways to get rid of viruses．． B．It is ma—producing microbatteries． C．It is making batteries with viruses． D．It is analyzing virus genes．

3．What expreion below is opposite in meaning to the word “shrink” appearing in paragraph 5？ A．Broaden． B．Spread． C．Extend． D．Expand：

4.Which of the following is true of Belcher's battery mentioned in paragraph 6？ A．It is made of metal．

B．It is a kind of watch battery．

C．It can only be seen with a microscope．

D．It is a metallic disk with viruses inside it． 5.How tiny is one battery part? A．Its width is one tenth of a hair． B．It equals the width of a hair． C．It is as thin as a piece of paper． D．Its width is too tiny to measure．

答案与题解：

1．C短文第一段的大致意思是，许多疾病都由病毒引起，诸如水痘、感冒和艾滋病，所以人们想尽办法躲避病毒。这是C所表达的意思。A不是正确选择，因为文章并没有说人们想

方设法去杀死病毒。B的后半句的内容(病毒肉眼看不见)和D的内容(吃药治疗病毒引起的疾病)文中没有提到.2．C短文的第二段明确提供了答案。

3．D 根据上下文，shrink在此的意思是“收缩”，即“缩小”。所以，它的反义词是expand(增大，扩张)。C不是正确选择，因为extend的意思是become longer，即“延伸”或“加长”。A的意思是“加宽”，也不是答案。B的意思是“伸展，展开”，在一定的上下文里也可以做shrink的反义词，但在第五段这个语境里，B不是最佳选择。

4．D第六段第二句中提到的metallic disk是指“金属圆盘”，它是微型电池的外形，其内部是由病毒构成的电池部件。微型电池不是由金属组成的，所以A不是答案。本段提到，这种电池looks like a regular watch battery，与手表里电池外形相似，但并不等同手表电池，所以B也不是正确选择。文章只是说电池的部件(但并没有说整个电池)小到只能用显微镜才能看到，所以C也不是正确的选择。D才是第六段所要表达的主要内容，因此是答案。

5．A 短文最后一段的第四句(“you could probably fit about lo of these virus-built battery parts，side to side，acro one hair”)提供了本题的答案。

*第三十八篇

Longer Lives for Wild Elephants Most people think of zoos as safe places for animals，where struggles such as difficulty finding food and avoiding predators don't exist.Without such problems,lanimals in zoos should live to a ripe old age．But mat may not be true for the largest land animals on Earth.Scientists have known that elephants in zoos often suffer from poor health．They develop diseases，joint problems and behavior changes．Sometimes．they even become infertile．or unable to have babies．

To learn more about how captivity affects elephants, a team of international scientists compared the life spans of female elephants born in zoos with female elephants living outdoors in their native lands．Zoos keep detailed records of all the animals in their care，documenting factors such as birth dates，illnees，weight and death．These records made it poible for the researchers to analyze 40 years of data on 800 African and Asian elephants in zoos acro Europe．The scientists compared the life spans of the zoo．born elephants with the life spans of thousands

3of female wild elephants in Africa and Asian elephants that work in logging camps，over approximately the same time period．

The team found that female African elephants born in zoos lived an average of l 6.9 years．Their wild counterparts who died of natural causes lived an average of 56 years——more than three times as long．Female Asian elephants followed a similar pattern．In zoos, they lived l 8．9 s years, while those in the logging camps lived 41.7 years．

Scientists don't yet know why wild elephants seem to fare so much better than their zoo-raised counterparts．Georgia Mason，a biologist at the University of Guelph

4in Canada who led the study, thinks stre and obesity may be to blame．Zoo elephants don't get the same kind of exercise they would in the wild，and most are very fat．Elephant social lives are also much different in zoos than in the wild，where they live in large herds and family groups．

Another finding from the study showed that Asian elephants born in zoos were more likely to die early than Asian elephants captured in the wild and brought to zoos．Mason suggests stre in the mothers in zoos might cause them to have babies that are le likely to survive．

The study raises some questions about acquiring more elephants to keep in zoos．While some threatened and endangered species living in zoos reproduce succefully and maintain healthy populations，that doesn't appear to be the case with elephants．“Currently，zoos al e net consumers of elephants，not net producers，” Mason says．

词汇：

Predator n．食肉动物 Ripe adj．成熟的Infertile adj．不生育的 Captivity n．监禁；束缚

Fare v．过活，生活

Obesity adj．过度肥胖；肥胖症

注释： 1．1ive to a ripe old age：这是一种固定用法，意思是live to an age that is considered to be very old(长寿，高寿)。

2．be true for：或者be true of：对„„适用。短文中第二段第一句：But that may not be true for the largest land animals on Earth．这里，作为主语的that指的是第一段所陈述的内容。这个句子要传达的意思是：动物园对其他动物来说是一个安栖之地，而对大象来说却不然。

3．logging camps：伐木场。Loggin9作为名词，意思是：伐木业。

4．stre and obesity may be to blame：压力和肥胖是问题的根源。be to blame：该受责备，应承担责任。

练习：

1．According to the first two paragraphs，unlike other zoo animals，zoo elephants A．have difficulty eating food． B．1ive to a ripe old age．

C：are not afraid of predators． D．develop health problems．

2．Which of the following about the international scientists' research on the life spans of elephants is NOT true?(See paragraph 3)? A．They compared zoo elephants with wild elephants．

B．They kept detailed records of all the elephants in their care． C．They analyzed the records of the elephants kept in zoos．

D．The zoo-born elephants they studied are kept in European zoos． 3．What do the scientists find in their research? A．Female elephants live longer than male elephants．

B．Female zoo elephants live longer than their wild counterparts．

C．Female zoo elephants die much earlier than their wild counterparts． D．Elephants in zoos and those in the wild enjoy the same long life spans． 4．What are the poible causes of stre and obesity zoo—raised elephants generally suffer from? A．They do not like living in herds． B．They do not get enough exercise．

C．They do not live with their families． D．Both B and C．

5．Which of the following does the author suggest in the last paragraph? A．It may not be a wise policy to keep elephants in the zoo． B．Elephants are no longer an endangered species．

C．Zoo-born elephants should be looked after more carefully． D．Zoos should keep more animals except elephants．

答案与题解：

1．D短文的第一段告诉我们，人们通常认为动物园内的动物没有猎食的困难，也不受其他 猎食动物的威胁，所以一般寿命较长。但第一段并没有提及大象。第二段则说，动物园内的大象却不然，它们面临很多健康问题。所以，除了D以外，其他选项均不符合这两段内容。

2．B 第三段告诉我们，动物园，而不是这些研究人员，保存了所有园内动物的详细相关信息。所以应该选择8。其他三个选项均能在该段中找到相关内容。

3．C短文的第四段提供了答案。该段告诉我们，野生的雌性大象的平均寿命是动物园里的雌性大象平均寿命的3倍还多。

4．D短文的第五段提供了答案。该段第三句的意思是：动物园里的大象不像野生大象那样活动，因此非常肥胖。他们也不像野生大象那样过着群居的生活，即live in herds and family groups。

5．A短文通篇陈述了大象在动物园内的生存问题，最后一段是全文的总结。该段第一句指出，对动物园大象的研究向人们提出了一个问题：是否应该将更多的大象关进动物园。该段还重复了第一、第二段的观点：其他动物在动物园能够很好地繁衍生息，而大象却不能。所以，A是正确选择。B、C、D均没有在文中被提及。

+第四十五篇

Some People Do Not Taste Salt Like Others Low—salt foods may be harder for some people to like than others，according

lto a study by a Penn State College of Agricultural Sciences food scientist．The research indicates that genetic factors influence some of the difference in the levels of salt we like to eat．

Those conclusions are important because recent，well—publicized efforts to

2reduce the salt content in food have left many people struggling to accept fare

3that simply does not taste as good to them as it does to others，pointed out John

4Hayes，aistant profeor of food science，who was lead investigator 0n the study． Diets high in salt Can increase the risk of high blood preure and stroke．That is why public health experts and food companies are working together on ways to help consumers lower salt intake through foods that are enjoyable to eat．This study increases understanding of salt preference and consumption． The research involved 87 carefully screened participants who sampled salty foods

5such as soup and chips，on multiple occasions，spread out over weeks．Test subjects were 45：men and 42 women, reportedly healthy，ranging in age from 20 t0 40 years．The sample was composed of individuals who were not actively modifying their dietary intake and did not smoke cigarettes．They rated the intensity of taste on a commonly used scientific scale，ranging from barely detectable to strongest sensation of any kind．

“Most of us like the taste of salt．However，some individuals eat more salt，both because they like the taste of saltine more，and also because it is needed to block other unpleasant tastes in food,” said Hayes.“Supertasters, people who experience tastes more intensely, consume more salt than nontasters do.Snack foods have saltine as their primary flavor, and at least for these foods, more is better, so the supertasters seem to like them more.” However, supertasters also need higher levels of salt to block unpleasant bitter tastes in foods such as cheese，Hayes noted．“For example，cheese is a wonderful blend of dairy flavors from fermented milk，but also bitter tastes from ripening that are blocked by salt，” he said．“A supertaster finds low-salt cheese unpleasant

6because the bitterne is too pronounced．”

Hayes cited research done more than 75 years ago by a chemist named Fox and a geneticist named Blakeslee，showing that individuals differ in their ability to taste certain chemicals．As a result，Hayes explained，we know that a wide range in taste acuity exists，and this variation is as normal as variations in eye and hair color．

“Some people，called supertasters，describe bitter compounds as being extremely bitter，while others，called nontasters，find these same bitter compounds to be tastele or only weakly bitter．”he said．“Response to bitter compounds is one of many ways to identify biological differences in food preference because 7supertastin is not limited to bitterne．(476)

词汇：

Publicize v．引起公众对„的注意；(用广告)宣传

Dietary adj．饮食的；规定食物的 Ferment v．(使)发酵 Geneticist n．遗传学家 Acuity n．敏锐；尖锐

注释：

1．Penn State College of Agricultural Sciences：即Penn State University--College of Agricultural Sciences宾州州立大学农学院。Penn是Pennsylvania的缩写，是美国宾夕法尼亚州名。宾州州立大学建于1855年：在全国共有24个分校。在句中，Penn State College of Agricultural Sciences用作定语，修饰food scientist。

2．Well-publicized efforts to reduce the salt content in food：大力宣传减少食物含盐量的做法

3．1eft many people struggling to accept fare that simply does not taste as good to them as it does to others：使得许多人努力去接受适合其他人而不适合他们口味的食物。fare相当于food。

4．1ead investigator：研发项目负责人

5．„carefully screened participants who sampled salty foods as soup and chips．on multiple occasion，spread out over weeks：„„经过仔细筛选的实验参与者，他们在几周内的不同时间里品尝了汤和薯条等含盐食物。

6．too pronounced：此处pronounced为形容词，意为very noticeable，conspicuous(明显的，显著的)。

7．supertasting：超重味感

练习：

1．In paragraph 2，John Hayes points out that A．it is good to health to eat food without salt． B．many people reject low—salt food completely．

C．many people accept low—salt tastele food reluctantly D．food with reduced salt tastes better． 2．The fourth paragraph describes briefly A．how to select subjects and what to do in the research． B．how to identify supertasters and nontasters．

C．why to limit the number of subjects to 87 persons． D．why to select more male subjects than female ones． 3.The article argues that supertasters A．1ike the；taste of saltine to block sweet tastes in food． B．1ike snack foods as saltine is their primary flavor．

C．consume le salt because they don t like intensive tastes． D．1ike to share salty cheese with nontasters．

4.Which of the following applies to supertasters in terms of bitter taste? A．They like bitterne in foods as well as saltine．

B．They like high．salt cheese as it has intense bitter taste． C．They prefer high—salt cheese．which tastes le bitter．． D.They prefer high-salt cheese as it is good to health．

5.What meage do the last two paragraphs carry? A．Taste acuity is genetically determined．

B．Taste acuity is developed over time after birth． C．Taste acuity is related to one's eye and hair color． D．Taste acuity is still a mysterious subject in science．

答案与题解：

1．C 根据短文的第二段内容，很多人因为食物中的含盐量降低，所以必须做出很大努力(struggling)去适应，而低盐食物对于他们来说，口味很不好(fare that simply does not taste„good to them)。选项C有accept reluctantly(勉强接受)表达了这层意思，所以是正确的选择。A、B、D三个选项均是错误的。

2．A第四段介绍了科学家是如何设计这项研究的，它包含了研究对象的人数、性别、人选条件、咸度味感分级表等。选项A概括了这方面的内容，所以是答案。而选项B、C、D所述内容均不符合该段的意思。

3．B 短文的第五段提供了答案o supertaster在这里的意思是：口味重的人，在本文中，nontaster是其反义词，即，口味清谈的人。该段告诉我们，口味重的人消耗更多的盐；因为快餐食品的主要味道就是咸味，而且咸度越高，口味越好，所以口味重的人对快餐较为偏爱。选项B表达了上述内容，所以是答案。

4．C 短文第六段提供了答案。该段告诉我们，奶酪发酵会产生苦味，supertasters不喜欢苦味，而高含盐量可以盖住奶酪里的昔味，这是他们偏爱高盐奶酪的原因。所以，只有C是正确选择。

5．A 文章第七段中，Hayes引用了75年前一位遗传学专家的实验。从这项实验中，Hayes得出的结论是，Taste acuity(味觉敏度)上的差异与他们头发和眼睛的颜色上的差异是同一类现象，也就是说，都是与生俱来的。第八段又说，这是一种biological difference(生物差异)，所以A是答案。B说味觉敏度是后天形成的，显然与作者的结论相左0℃说味觉敏度的差异与头发和眼睛的颜色上的差异有关，显然是错误的。D的内容在最后两段都没有提到，所以不会是答案。

+第四十六篇

Marvelous Metamaterials 1 Invisibility cloaks would have remained impoible，forever locked in science

2fiction．had it not been for the development of metamaterials.In Greek, “meta” means beyond, and metamaterials car do things beyond what we see in the natural world—like shuffle light waves around an object，and then bring them back 3together．If scientists ever manage to build a full—fledged invisibility cloak，it will probably be made of metamaterials．

“We are creating materials that don't exist in nature, and that have a physical phenomenon that doesn't exist in nature,” says engineer Dentcho Genov.“That is the most exciting thing.” Genov designs and builds metamaterials--such as those used in cloaking--at Louisiana Tech University in Ruston, Louisiana.An invisibility cloak will probably not be the first major accomplishment to come from the field of metamaterials．Other applications are just as excitin9．In many labs，for example，scientists are working on building a hyperlens．A lens is a device——usually made of gla——that can change the direction of light waves．Lenses are used in microscopes and cameras to focus light，thus allowing a researcher to see small things or a photographer to capture image of things that are far away．

A hyperlens，however，would be made of metamaterials．And since metamaterial s can do things with light that ordinary materials can't，the hyperlens would be a powerful t001．A hyperlens would allow researchers to see things at the smallest scale imaginable—as small as the wavelength of visible light． Genov points out that the science of metamaterials is driven by the imagination：If someone call think of an idea for a new behavior for fight，then the engineers can find a way to design a device using metamaterials．“We need people who can imagine,” he says．

Since 2006，many laboratories have been exploring other kinds of metamaterials that don't involve just visible light．In fact，scientists are finding that almost any kind of wave may respond to metamaterials．At the Polytechnic University of Valencia in Spain．Jose Sanchez-Dehesa is working with acoustics, or the science of sound．Just as an invisibility cloak shuffles waves of light，an “acoustic” cloak would shuffle waves of sound in a way that's not found in nature．In an orchestra hall, for example．an acoustic cloak could redirect the sound waves——so someone sitting behind a column would hear the same concert as the rest of the audience．without distortion．

Sanchez-Dehesa，an engineer，recently showed that it's poible to build such an acoustic cloak，though he doubts we'11 see one any time soon．“In principle，it is poible,” he says，but it might be impoible to make one, he adds．

Other scientists are looking into ways to use larger metamaterials as shields

6around islands or oil rigs as protection from tsunamis．A tsunami is a giant．destructive wave．The metamaterial would redirect the tsunami around the rig or island．and the wave would resume its ioumey on the other side without causing any harm．

词汇：

Cloak n．斗篷，披风 Metamaterial n．超材料

full—fledged adj．完全成熟的，完全合格的 Hyperlens n．超透镜 Acoustics n．声学 Tsunami n.海震，海啸

注释：

1．Invisibility cloaks：隐形衣。在《哈利·波特与死亡圣器》(Harry Potter and the Deathly Hallows)一书中，哈利通过邓布利多的转交继承了他父亲的隐形衣。该书是英国女作家J．K．罗琳创作的哈利·波特系列小说的第7部。

2．„had it not been for the development of metamaterials：„„如果超材料尚未得到开发的话。该句使用的是虚拟过去时的倒装结构。虚拟过去时表示与过去事实相反的假设；因为是倒装结构，所以将情态动词had提到主语之前。如使用正常语序，该句可写为．．．．if it had not been for the development of metamaterials．

3．“meta” means beyond．and metamaterials can do things beyond what we see in the natural world—like shuffle light waves around an object and then bring them back together：“meta”的词义是“超越”，metamaterials(超材料)能做出我们在自然界看不到的事情，例如将光波移动到某个物体周围，然后将光波全部收回。

4．Louisiana Tech University in Ruston，Louisiana：路易斯安那理工大学，位于路易斯安那州拉斯顿市。该校为公立大学，1894年建校，是美国最为重要的研究型大学之一。5．the Polytechnic University of Valencia in Spain：瓦伦西亚理工大学，位于西班牙东南部的瓦伦西亚市，该校建于l968年。． 6．oil rigs：石油钻塔

练习：

1．What is true for metamaterials? A．They will always remain in science fiction． B．They are already a reality． C．They are nonexistent in nature．

D．Scientists begin to use them to build invisible cloaks． 2．A hyperlens is a more powerful tool than a traditional lens A．as it can allow scientists to see small things．

B．as it can help photographers to capture images far away． C．even if it is made of ordinary materials．

D．as it can help scientists to see even the wavelengths of visible light． 3．Scientists at the Polytechnic University of Valencia try to invent A．an acoustic cloak that can shuffle waves of light． B．an invisible cloak that can shuffle waves of sound． C．an acoustic cloak that can shuffle waves of sound． D．a cloak that is made of materials found in nature． 4．According to Sdnchez—Dehesa，A．it is of great poibility to build an acoustic cloak soon．

B．it is poible to build an acoustic cloak in theory but far from．reality． C．it is totally impoible to build an acoustic cloak.D．it is theoretically impractical to build an acoustic cloak．

5．What ways are some scientists looking into to protect the island and oil；rig from tsunamis?(Read the last paragraph．

A．Surround them with metamaterials as protective shields．

B．Stopping the tsunami with metamaterials hours before it reaches them． C．Building them with larger metamaterials to keep away tsunamis．

D．Using the equipment made of metamaterials to forecast arrival of a tsunami．

答案与题解：

1．C A不是正确答案，因为短文一开始的句子使用了虚拟语态，句子的意思是：如果超材料尚未得到开发的话„„。也就是说，科学家已经在研发超材料。短文的后面部分也进一步提到科学家正致力于超材料的开发。但是因为超材料尚未研发成功，科学家更没有开始使用超材料来制造隐身衣，所以B和D也不是正确选择。第二段的第一句提供了答案。

2．D A、B所述功效均是第三段中普通的lens能够达到的功效，所以不是正确选择。Hyperlens不是用普通材料制成，所以C也是错误选择。短文第四段对hyperlens做了描述，结合第四段内容可以得到D选项提供的结论。3．C 短文的第七段提供了答案。该段的大意是：瓦伦西亚理工大学的研究者Jose Sanchez．-Dehesa试图研发acoustic cloak，其原理与invisible cloak相同，只是acoustic cloak移动声波(shuffle waves of sound)，而不是移动光波(shuffle waves of light)。所以，只有C是正确的选择。

4．B 短文的第八段提供了答案。工程师Sanchez-Dehesa认为，成功开发acoustic cloak在理论上是可能的，但他对是否能成功表现出怀疑。

5．A 短文的最后一段告诉我们，科学家也在研究如何将超材料应用于抵御海啸的袭击。可以在岛屿周围使用超材料作为防护(shields)，因为超材料可以让海啸改变行走方向(redirect tsunarni)。A表达了这层意思，所以是答案。文章没有说，在海啸到达之前数小时用超材料将海啸档住，B不是答案。文章没有建议用超材料建造海岛和石油钻塔，C不是答案。D的内容是用超材料制作海啸预警器，文章中没有提及，也不是答案。