Almost every machine with moving parts has wheels,yet no one knows exactly when the first wheel was invented or what it was used for.We do know,however,that they existed over 5,500 years ago in ancient Asia.
The oldest known transport wheel was discovered in 2002 in Slovenia.It is over 5,100 years old.Evidence suggests that wheels for transport didn’t become popular for a while,though.This could be because animals did a perfectly good job of carrying farming tools and humans around.
But it could also be because of a difficult situation.While wheels need to roll on smooth surfaces,roads with smooth surfaces weren’t going to be constructed until there was plenty of demand for them.Eventually,road surfaces did become smoother,but this difficult situation appeared again a few centuries later.There had been no important changes in wheel and vehicle design before the arrival of modern road design.
In the mid1700s,a Frenchman came up with a new design of road—a base layer(层) of large stones covered with a thin layer of smaller stones.A Scotsman improved on this design in the 1820s and a strong,lasting road surface became a reality.At around the same time,metal hubs (the central part of a wheel)came into being,followed by the pneumatic tyre(充气轮胎) in 1846.Alloy wheels were invented in 1967,sixty years after the appearance of tarmacked roads(柏油路).As wheel design took off,vehicles got faster and faster. (2013·重庆,C)
【小题1】What might explain why transport wheels didn’t become popular for some time?
A.Few knew how to use transport wheels. |
B.Humans carried farming tools just as well. |
C.Animals were a good means of transport. |
D.The existence of transport wheels was not known. |
A.It was easier than wheel design. |
B.It improved after big changes in vehicle design. |
C.It was promoted by fastmoving vehicles. |
D.It provided conditions for wheel design to develop. |
A.By giving examples. |
B.By making comparisons. |
C.By following time order. |
D.By making classifications. |
A.The beginning of road design. |
B.The development of transport wheels. |
C.The history of public transport. |
D.The invention of fastmoving vehicles. |
【小题1】C
【小题2】D
【小题3】C
【小题4】B
解析【小题1】 C
解析 细节理解题。从第二段中的“This could be because animals did a perfectly good job of carrying farming tools and humans around.”可知,正确答案为C项。
【小题2】 D
解析 推理判断题。从第三、四段的描述我们可知,道路的设计为轮子的发展提供了条件。
【小题3】 C
解析 组织结构题。从最后一段中的In the mid1700s;in the 1820s;At around the same time;in 1967等可看出该段是按时间顺序组织起来的。
【小题4】 B
解析 主旨大意题。全文主要向我们介绍了车轮的发展历程。
科目:高中英语 来源: 题型:阅读理解
Humans might be the most highly-evolved species on the planet, but most animals possess skills we can only dream of having. Imagine how much electricity we could save if we could see in the dark the way cats do. Imagine leaping from tree to tree like a monkey. Giraffes, which are otherwise calm and good-natured, sleep only 4.6 hours a day.
We realized a long, long time ago that nature provides the best blueprint for invention. We’ve borrowed canals from beavers and reflectors from cat’s eyes. Although the words “bionics”(仿生学) became popular only after the 1960s, history shows that nature has always provided ideas on solving everyday problems. Our archives(档案) don’t go back to the time of Leonardo da Vinci and his bird-like flying machines, but we can take you to the late 19th century, where we applied those same principles for building our first practical airplanes.
To prepare for their flight at Kitty Hawk, the Wright brothers studied the movements of pigeons to figure out how they stayed high up when they were heavier than air. Their success inspired scores of successors to improve on the airplane by studying various aspects of nature. One of Orville Wright’s pupils caught and stuffed seagulls to examine their wingspan. Meanwhile, two French inventors examined spinning sycamore(梧桐) seeds in an effort to apply those same motions, reversed, to a helicopter .
Some examples are more obvious than others. The outside of the airplane designed by the Wright brothers looks like a minimalistic(简单抽象艺术) structure. On the other hand, Barney Connett’s fish submarine actually looks like a fish.
Some bio-inspired concepts have yet to be invented. In the 1960s, the US Army commissioned several university professors to conduct research on the motor skills animals in hope of applying those same abilities to tanks. Tanks that run like horses or jump like grasshoppers(蚂蚱)-sounds shocking, doesn’t it? But imagine how life would change if we could achieve that.
【小题1】“Cats”, “monkeys” and “giraffes” mentioned in paragraph 1 are examples to show______.
A.they are highly-evolved species as humans |
B.animals have skills that humans do not possess |
C.humans can learn animals’ skills |
D.they are skillful in different ways |
A.People carried out a systematic study on pigeons. |
B.People studied more animals and plants to develop the airplane. |
C.People could fly their airplane for fun. |
D.People kept their airplane at a French gallery. |
A.It has cost a large sum of money. |
B.It has changed our life. |
C.It has improved the abilities of tanks |
D.It has not succeeded yet. |
A.many inventions get ideas from nature. |
B.Some animals possess unique skills. |
C.People should protect nature. |
D.Bionics is far from perfect |
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科目:高中英语 来源: 题型:阅读理解
Our body clock,or natural body rhythm,influences our energy and alertness.Paying attention to it can help us choose the suitable time of day when we best perform specific tasks.
The reality,however,is that most of us organize their time around work demands,school deadlines,commuting or social events.Doing whatever your body feels like doing is a luxury in today's fast-paced modem society.
But that doesn't mean it isn't worth trying.Obeying our body clock has significant health benefits.Disrupting our natural body rhythm,on the other hand,has been linked to problems such as depression,obesity,or headache,says Steve Key,a biology professor.
When the body clock can synchronize(使……同步)the rhythms of its natural processes,it “gives us an advantage in daily life”,says Key.
According to him,when it comes to cognitive(认知的)work,most adults perform best in the late morning.As our body temperature starts to rise just before awakening in the morning and continues to increase until midday,our memory,alertness and concentration gradually improve.
However,he adds,our ability to concentrate typically starts to decrease soon thereafter.Most of us are more easily distracted(分心)between noon and 4 pm.
Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm,making that a good time for a nap.
Surprisingly, tiredness may increase our creative powers.For most adults,problems that require open ended thinking are often best dealt with in the evening when they are tired, according to a study in the journal Thinking & Reasoning.
When choosing a time of day to exercise,paying attention to your body clock can improve results.Physical performance is usually best from about 3 to 6 pm,says Michael Smolensky,a professor of biomedical engineering.
Of course, not everyone's body clock is the same,making it even harder to synchronize natural rhythms with daily plans.
【小题1】If we know our natural body rhythm well, we can .
A.find out the suitable time to do specific tasks |
B.organize our time around work demands |
C.do whatever our body feels like doing |
D.be sure to be healthy |
A.Our alertness is influenced by our natural body rhythm |
B.Doing whatever your body feels like is very difficult in our modem society. |
C.Obeying our body clock is good for our health. |
D.Disrupting our natural body rhythm can lead to obesity. |
A.When our body clock synchronizes the rhythms of its natural processes,we can do better. |
B.When it comes to cognitive(认知的)work,most people perform best in the late morning. |
C.As body temperature rises before awakening in the morning,our concentration gradually improves. |
D.We concentrate better in the late morning than between noon and 4 pm. |
A.when we get up in the morning |
B.when we are tired in the evening |
C.when we are full of energy in the late morning |
D.when we are asleep at night |
A.What is natural body rhythm? |
B.Natural body rhythm is good for us. |
C.Something about natural body rhythm. |
D.The latest research about natural body rhythm. |
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科目:高中英语 来源: 题型:阅读理解
Mass transportation revised the social and economic fabric of the American city in three fundamental ways. It catalyzed physical expansion, it sorted out people and land uses, and it accelerated the inherent instability of urban life. By opening vast areas of unoccupied land for residential expansion, the omnibuses, horse railways, commuter trains, and electric trolleys pulled settled regions outward two to four times more distant form city centers than they were in the premodern era. In 1850, for example, the borders of Boston lay scarcely two miles from the old business district; by the turn of the century the radius extended ten miles. Now those who could afford it could live far removed from the old city center and still commute there for work, shopping, and entertainment. The new accessibility of land around the periphery of almost every major city sparked an explosion of real estate development and fueled what we now know as urban sprawl. Between 1890 and 1920, for example, some 250,000 new residential lots were recorded within the borders of Chicago, most of them located in outlying areas. Over the same period, another 550,000 were plotted outside the city limits but within the metropolitan area. Anxious to take advantage of the possibilities of commuting, real estate developers added 800,000 potential building sites to the Chicago region in just thirty years – lots that could have housed five to six million people.
Of course, many were never occupied; there was always a huge surplus of subdivided, but vacant, land around Chicago and other cities. These excesses underscore a feature of residential expansion related to the growth of mass transportation: urban sprawl was essentially unplanned. It was carried out by thousands of small investors who paid little heed to coordinated land use or to future land users. Those who purchased and prepared land for residential purposes, particularly land near or outside city borders where transit lines and middle-class inhabitants were anticipated, did so to create demand as much as to respond to it. Chicago is a prime example of this process. Real estate subdivision there proceeded much faster than population growth.
【小题1】With which of the following subjects is the passage mainly concerned?
[A] Types of mass transportation.
[B] Instability of urban life.
[C] How supply and demand determine land use.
[D] The effect of mass transportation on urban expansion.
【小题2】Why does the author mention both Boston and Chicago?
[A] To demonstrate positive and negative effects of growth.
[B] To exemplify cities with and without mass transportation.
[C] To show mass transportation changed many cities.
[D] To contrast their rate of growth.
【小题3】According to the passage, what was one disadvantage of residential expansion?
[A] It was expensive.
[B] It happened too slowly.
[C] It was unplanned.
[D] It created a demand for public transportation.
【小题4】The author mentions Chicago in the second paragraph as an example of a city,
[A] that is large.
[B] that is used as a model for land development.
[C] where the development of land exceeded population growth.
[D] with an excellent mass transportation system.
Vocabulary
1.revise 改变
2.fabric 结构
3.catalyze 催化,加速
4.sort out 把……分门别类,拣选
5.omnibus 公共汽车/马车
6.trolley (美)有轨电车,(英)无轨电车
7.periphery 周围,边缘
8.sprawl 建筑物无计划延伸,蔓延,四面八方散开
9.lot 小片土地
10.underscore 强调,在下面划横线
11.transit lines 运输线路
12.subdivision (出售的)小块土地,再划分小区
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科目:高中英语 来源: 题型:阅读理解
Why Doesn’t Anybody Copy Apple?
Apple’s products are the envy of the world. They have been spectacularly successful and are widely imitated, if not copied. The minute Apple crystallizes a product, everyone knows how to compete.This idea that the basis of competition is set by Apple and then the race is on to climb the path of improvement is unquestionable.When Apple releases a product that defines a category or dramatically changes the structure of an industry, it becomes obvious what needs to be built. But what I wonder is why everyone wants to copy Apple’s products but nobody wants to copy being Apple?
I can think of two reasons. Firstly, Apple is not worth copying because it's not successful; secondly, Apple’s success cannot be copied because it is a magical process.
There is a great deal of evidence for the first hypothesis. The idea of Apple being successful is not something reflected in its stock price.Being valued lower than the average company in the S&P(标准普尔)500 indicates that to whatever degree Apple was successful in the past, it's not seen by the vast majority of observers as successful in the future.Why should one bother copying Apple if it results in being punished with a low valuation? If one works really hard at innovation and then that innovation becomes commoditized(商品化)very quickly, why should one bother?
When innovation practitioners are asked what makes Apple successful, the answers regarding the cause of this success border on the mythical. The climax of this hypothesis is the “chief-sorcerer” theory of success which places one magician, like Steve Jobs, in charge of casting all the right spells(符咒).
What about Apple’s own opinion of what makes it tick? Tim Cook refers to a great team and integration of hardware, software and services as unique Apple advantages. It’s a better explanation.Integration is something that can take a long time, but it is possible with great effort.A few companies are starting to make moves in that direction, but efforts are half-hearted.There is no “move the Earth” panic to become an integrated company from Samsung, Google or Microsoft.
My own suspicion is that Apple is more aware of what makes it special than it lets out. However, as Tim points out, it’s not a formula.It’s complex, it’s subtle, but it’s not magic.It’s a process that requires a degree of faith and courage.
【小题1】When a new product of Apple comes out, often it ______.
A.ruins an industry dramatically |
B.starts a revolution of an industry |
C.puts itself in an unbeatable position |
D.is soon overtaken by imitated products |
A. Apple is not a successful company |
B. they have no access to relevant resources |
C. It’s hard to find a magician like Steve Jobs |
D.being Apple takes more than time and efforts |
A.other companies are dedicated to integration |
B.Apple itself is fully aware of its unique advantages |
C.Apple will hold the leading position in this industry |
D.other companies don't have a great team as Apple does |
A.Acceptable. | B.Disappointing. | C.Unquestionable. | D.Convincing. |
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科目:高中英语 来源: 题型:阅读理解
Men have always believed that they are smarter than women. Now, a study has found that while this is certainly true, men also have to deal with the fact that they are also more stupid than the fairer sex.
In the study, scientists measured the IQ of 2500 brothers and sisters and they found an uneven number of men not only in the top two percent, but also in the bottom two percent.
The study's participants were tested on science, maths, English and mechanical abilities.
Though there were twice as many men as women in the smartest group, there were also twice as many men among the dolts.
The aggregate scores of men and women were similar.
One of the study's authors, psychology professor Timothy Bates, said that the phenomenon may be because men have always been expected to be high achievers and women have been restricted to spend more time taking care of their home.
"The female developmental program may be tilted more towards ensuring survival and the safety of the middle ground.," the Daily Mail quoted Professor Bates, of Edinburgh University, as saying.
The research tallies with past results that men were more likely than women to receive first class University degrees or thirds and women secured the seconds.
It has been said that men are more ready to take risk when it comes to academics. Women have always found to be steadier in their learning.
A past study has shown that women are securing more firsts and seconds, while men are continuing to receive more thirds.
The argument for the change is that the increase of coursework at the cost of exams favors women's steady approach.
【小题1】The purpose of the passage is to tell us that ________.
A.man are smarter then women |
B.man are more stupid the women |
C.a new fact about the IQ of men and women has been found |
D.men are more likely to receive first class university degrees |
A.they are born stupid |
B.they have to spend more time to tale care of their home than men |
C.they don’t like to take risk |
D.they are not expected to be high achievers |
A.agree with | B.deal with | C.go against | D.go with |
A.Women are steadier in their learning. |
B.men are more ready to take risk in everything |
C.women are securing more firsts and seconds |
D.women are doing much better in academy |
A.Why are men smarter than women? |
B.Why are men more stupid than women? |
C.How does the result go along with the past research? |
D.How can we help the men in the bottom? |
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科目:高中英语 来源: 题型:阅读理解
LONDON—Here’s a new warning from health experts:Sitting is deadly.
Scientists are increasingly warning that sitting for long periods—even if you also exercise regularly—could be bad for your health.And it doesn’t matter where the sitting takes place—at the office,at school,in the car or before a computer or TV—just the overall number of hours it occurs.Several studies suggest people who spend most of their days sitting are more likely to be fat,have a heart attack or even die.
In an editorial published this week in the British Journal of Sports Medicine,Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.
While health officials have issued guidelines recommending minimum amounts of physical activity,they haven’t suggested people try to limit how much time they spend in a seated position.
“After four hours of sitting,the body starts to send harmful signals,”said EkblomBak.She explained that genes regulating(调节) the amount of glucose(葡萄糖) and fat in the body start to shut down.
Even for people who exercise,spending long periods of time sitting at a desk is still harmful.Tim Armstrong,a physical activity expert at the World Health Organization,said people who exercise every day—but still spend a lot of time sitting—might get more benefit if that exercise was spread across the day,rather than in a single bout(一回).
Still,in a study published in 2009 that tracked more than 17,000 Canadians for about a dozen years,researchers found people who sat more had a higher death risk,whether or not they exercised.
“We don’t have enough evidence yet to say how much sitting is bad,” said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge,who led the Canadian study.“But it seems the more you can get up and interrupt this sedentary behavior,the better.”
Figures from a U.S. survey in 20032004 found Americans spend more than half their time sitting,from working at their desks to sitting in cars.
Experts said more research is needed to figure out just how much sitting is dangerous,and what might be possible to offset those effects.
“People should keep exercising because that has a lot of benefits,” EkblomBak said.“But when they’re in the office,they should try to interrupt sitting as often as possible,” she said.
【小题1】What is the best title for the text?
A.Not Sitting Too Much While Working |
B.How to Avoid Sitting Too Much |
C.Sitting Too Much Could Be Deadly |
D.More and More People Sit Too Much |
A.the more time you spend in exercising in a single bout(一回),the healthier you will be |
B.those who often sit too much are sure to grow fat or suffer from a heart attack |
C.regular exercise is effective to get rid of the side effects of sitting too much |
D.you had better not sit for more than four hours in a single bout |
A.It results in a higher death risk. |
B.It increases glucose and fat in the body. |
C.It makes a person unable to exercise long enough in a day. |
D.It causes the gene to fail to balance the glucose and fat in the body. |
A.improve | B.avoid |
C.ignore | D.achieve |
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科目:高中英语 来源: 题型:阅读理解
Inside their one-store, metal-roofed house on Vancouver Island’s west coast,Janet Schwartz and her domesticated(驯养的) deer, Bimbo, are returning to their normal lives. The law-represented by men and women dressed in black uniforms and carrying guns — is no longer threatening to forcibly separate Schwartz and Bimbo,freeing the l0-year-old deer to the fates (命运) of the surrounding rainforest and its hungry wolves and black bears.
“We love each other,”said Schwartz who turned 70 on Saturday. “she’ll come up to me and she’ll kiss me right on the lips,like a man kisses a woman’’
For four days last week,Schwartz’ life turned as rocky as the rough logging road that connected her life to the outside world. Conservation officers had arrived with orders to loose Bimbo. Schwartz was told she wasn’t allowed to touch Bimbo any more. It seemed somebody had complained,said Environment Minister Terry Lake earlier in the week, noting it’s illegal to keep wild animals as pets.
During those tense days,sleepless nights were made even more restless by nightmares,said Schwartz. There were news stories and Facebook pages which supported Schwartz and by Friday,the government had changed its mind. Schwartz could keep her pet with the help of a veterinarian and conservation officers.
“It makes me feel good,”said Schwartz of the announcement.“She is my life.and I’ve had her since the day she’s been born.”
The relationship began when a friend found the orphaned fawn (幼鹿) along a nearby logging road,more than a kilometer away from her current home,said Schwartz. The friend brought the fawn over because she knew Schwartz had raised a deer before.
Schwartz named the fawn(小鹿) Bimbo,based on a Gene Autry song that was playing inside her home at the time,and began feeding the animal goat’s milk. Days turned into months and years, and now Bimbo is a part of the family.
【小题1】According to Paragraph 1 , Janet Schwartz’s life is returning to normal because
A.no one disturbs her life again | B.she can continue to keep the deer |
C.she has married again | D.Bimbo has returned to the forest |
A.It was the only companion in her house |
B.She wanted to study the lifestyle of the deer. |
C.The deer had become part of her life. |
D.She had a veterinarian to help her. |
A.the deer was not properly taken care of |
B.the deer brought harm to the neighborhood |
C.it was against the law to keep the deer as a pet |
D.the deer made too much noise |
A.Schwartz’s love for the deer. |
B.The threat to the deer in the wild. |
C.The change of the law. |
D.The influence from the press and the Web. |
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科目:高中英语 来源: 题型:阅读理解
What makes humans smarter than other animals? We’ve got a bigger brain, of course. But when it comes to brains, is bigger always better?
Traditionally, scientists have thought that humans’ superior intelligence derived(源于)mostly from the fact that our brains are three times bigger than those of our nearest living relatives, chimpanzees. People even used to believe that because men have slightly larger brains than women that men are smarter.
This, however, is not the truth. Scientists at University College London in the UK have found that brain organization, and not brain size, is the key to the superiority of human intelligence, reported Live Science.
Through millions of years of evolution, our ancestors were constantly pushed to get smarter so that they could meet the demands of new environments. However, holding this growing intelligence in increasingly large brains was not the best choice because bigger brains require more energy to power. “This is when reorganization may come into play, ”said Christophe Soligo, a member of the London research team.
In the study, scientists looked at the brains of 17 species of primates(灵长目动物), including monkeys, apes and humans. They found that in the process of evolution, brains didn’t keep growing as a whole. Certain regions of the brain grew prior to others in response to species’ needs, and in this way they could make the best use of their limited brain space.
For example, when early humans were struggling to survive, the brain region in charge of using tools and finding food grew in size more than other regions. But in modern times, the prefrontal cortex(前额皮质)—the region in charge of social cognition(认知), moral judgments and goal-directed planning—grew more than the rest of the brain.
Think of the brain as a room. If a big room is poorly organized, it doesn’t necessarily store more stuff than a smaller one.
Paul Manger, professor at the University of the Witwatersrand, South Africa, explains this principle using the example of whales. He told Scientific American: “Whales have big brains, absolutely. But if you look at the actual structure of the brain, it’s not very complex. Brain size only matters if the rest of the brain is organized properly. ”
【小题1】It has recently been found that humans are smarter than the other animals mainly because .
A.they are a species of primates |
B.they have much larger brains |
C.their brain structure is more complex |
D.they were constantly pushed to get smarter |
A.the brain kept growing in size to adapt to new environments |
B.most regions of the brain didn’t change |
C.the prefrontal cortex grew more than the rest of the brain |
D.humans’ brains became increasingly simple so that humans could survive |
A.Gender makes a difference in intelligence. |
B.The size of the brain has nothing to do with intelligence. |
C.Species whose brain is organized properly tend to be smarter. |
D.Larger brains are usually organized better than smaller ones. |
A.by presenting research data |
B.by giving examples |
C.by making a comparison |
D.by analyzing cause and effect |
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