影音先锋制服丝袜_欧美 国产 日本_亚洲欧美综合自拍_亚洲最大成人在线观看_成人一区二区三_色呦呦网站入口_亚洲欧美高清在线_黄页网站在线看_一卡二卡在线观看_在线观看免费黄网站

Monitoring global warming usually requires a Ph. D. and enough maths to glaze your eyes. But that Francisco Lopez and Ruby Nostrant track（記錄）what climate change is doing to five different plants in Tucson, Arizona and they are only in the second grade.
“We are collecting data because the weather is changing and the plants are blooming,” Ruby explained.
Scores of other students at Borton Primary Magnet School and Sunnyside High School in Tucson are heading outdoors to be part of a new scientific push to figure out how the biological timing of the earth is changing. It’s a research project that the average person, even a kindergartner, can join in.
The National Phenology（生物氣候?qū)W）Network is calling on volunteers to help track early spring blooms and eventually changes in animals caused by global warming. It’s called Project Budburst. When it was first open to the public last year, thousands of people participated in 26 states.
“All people can contribute to it by tracking the timing of flowering events or leaf-out events for plants and animals in their backyard,” said Phenology Network director Jake Weltzin. He calls the volunteers “citizen-scientists.”
The idea is that tracking flowers blooming—especially lilacs（丁香）; which everyday people have helped track for decades—is fairly simple. The Website http://www.Windows.ucar.edu/ citizen_science/budburst/index.html gives directions on what to look for in different parts of the country.
University of Maryland professor David Inouye said it’s so easy to figure out what’s blooming that a lack of special knowledge isn’t a problem.
University of Arizona ecology graduate student Lisa Benton coordinated（協(xié)調(diào)）the Tucson high school students as they looked at plants five minutes from their high school. Each student has specific guidelines and she’s been happy so far with the data she is getting. For his part, second-grader Francisco said he had fun helping out.
“I like going out in the desert,” he said. “I want to be an Einstein.”
小題1:Francisco Lopez and Ruby Nostrant are monitoring global warming by __________.
A．watching early spring blooms and changes in animals
B．studying the biological timing of earth
C．collecting data of the local weather
D．tracking the early spring blooms of some local plants
小題2:Those who participate in Project Budburst are mostly ___________.
A．ecology college graduatesB．high school students
C．common peopleD．experts
小題3:What David Inouye says suggests that ____________.
A．the study carried out by students is convincing
B．the students still need special training to study climate change
C．it is difficult to study climate change
D．to figure out what’s blooming needs special knowledge
小題4:Who is primary school student joining in the Project Budburst?
A．Lisa Benton.B．David Inouye
C．Francisco Lopez.D．Jake Weltzin.
小題5:We can conclude from the passage that _______.
A．changes in animals caused by global warming happen earlier than those in plants
B．the biological timing of earth is changing because of climate change
C．the effect of climate change in Tucson, Arizona can be hardly noticed
D．a(chǎn)ll the plants in Tucson, Arizona are blooming earlier because of climate change

小題1:D
小題2:C
小題3:A
小題4:C
小題5:B

試題分析：本文介紹了大眾普通人可以參加監(jiān)測全球變暖導(dǎo)致的生物時間的變化。參加監(jiān)測全球變暖一般需要博士學(xué)位和高深的數(shù)學(xué)知識，但是Project Budburst 可以讓志愿者參加，可以是大學(xué)生，中學(xué)生甚至是小學(xué)生都可以。因?yàn)橛袑ｉT的網(wǎng)站進(jìn)行專業(yè)的指導(dǎo)，所以普通人所做的研究令人信服。
小題1:細(xì)節(jié)理解題。從第二段的“We are collecting data because the weather is changing and the plants are blooming,” Ruby explained.可知他們正在收集有關(guān)天氣變化和植物盛開的數(shù)據(jù)。故選D。
小題2:推理判斷題。從第四段的When it was first open to the public last year, thousands of people participated in 26 states.可知去年P(guān)roject Budburst 第一次對公眾開放時，26個州成千上萬的人參加了。所以參加這個工程的是大眾普通人。故選C。
小題3:推理判斷題。第六段的gives directions on what to look for in different parts of the country.專門有網(wǎng)站給指導(dǎo)。第七段的University of Maryland professor David Inouye it’s so easy to figure out what’s blooming that a lack of special knowledge isn’t a problem. David Inouye說，找出盛開的花是如此容易,缺乏專業(yè)的知識不是一個問題。可知在有指導(dǎo)的情況下，學(xué)生做的研究有說服力。故選A。
小題4:細(xì)節(jié)理解題。從第八段的For his part, second-grader Francisco said he had fun helping out可知Francisco是小學(xué)二年級的學(xué)生。故選C。
小題5:推理判斷題。從第四段的The National Phenology（生物氣候?qū)W）Network is calling on volunteers to help track early spring blooms and eventually changes in animals caused by global warming. 可知全球變暖導(dǎo)致春天開花時間的變化。故選B。
考點(diǎn)：
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

If you look for a book as a present for a child. You will be spoiled for choice even in a year when there is no new Harry Potter. J.K Rowling’s wizard is not alone: the past decade has been a harvest for good children’s books, which has set off a large quantity of films and in turn led to increased sales of classics such as The Lord of the Rings.
Yet despite that, reading is increasingly unpopular among children. According to statistics, in 1997 23% said they didn’t like reading at all. In 2003, 35% did. And around 6% of children leave primary school each year unable to read properly.
Maybe the decline is caused by the increasing availability of computes games. Maybe the books boom has affected only the top of the educational pile. Either way, Chancellor Gordon Brown plans to change things for the bottom of the class .In his pre-budget report, he announced the national project of Reading Recovery to help the children struggling most.
Reading Recovery is aimed at six-year-olds, who receive four months of individual daily half-hour classes with a specially trained teacher. An evaluation earlier this year reported that children on the scheme made 20 months’ progress in just one year, whereas similarly weak readers without special help made just five months’ progress, and so ended the year even further below the level expected for their age.
International research tends to find that when British children leave primary school they read well, but read less often for fun than those elsewhere. Reading for fun matters because children who are keen on reading can expect lifelong pleasure and loving books is an excellent indicator of future educational success. According to the OECD, being a regular and enthusiastic reader is of great advantage.
小題1:Which of the following is true of Paragraph 1?
A．Many children’s books have been adapted from films.
B．Many high-quality children’s books have been published.
C．The sales of classics have led to the popularity of films.
D．The sales of presents for children have increased.
小題2:Statistics suggested that              .
A．the number of top students increased with the use of computers
B．a(chǎn) decreasing number of children showed interest in reading
C．a(chǎn) minority of primary school children read properly
D．a(chǎn) large percentage of children read regularly
小題3:What do we know about Reading Recovery?
A．An evaluation of it will be made sometime this year.
B．Weak readers on the project were the most hardworking.
C．It aims to train special teachers to help children with reading.
D．Children on the project showed noticeable progress in reading.
小題4:Reading for fun is important because book-loving children _________.
A． take greater advantage of the project
B．show the potential to enjoy a long life
C．a(chǎn)re likely to succeed in their education
D．would make excellent future researchers
小題5:The aim of this text would probably be _________.
A．to overcome primary school pupils’ reading difficulty
B．to encourage the publication of more children’s books
C．to remind children of the importance of reading for fun
D．to introduce a way to improve early children reading

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

WASHINGTON(Reuters)?People who drink two or more sweetened soft drinks a week have a much higher risk of pancreatic cancer (胰腺癌), an unusual but deadly cancer, researchers reported on Monday.
People who drank mostly fruit juice instead of sodas did not have the same risk, the study of 60,000 people in Singapore found.
“Sugar may be to blame but people who drink sweetened sodas regularly often have other poor health habits,” said Mark Pereira of the University of Minnesota, who led the study.
“The high levels of sugar in soft drinks may be increasing the level of insulin(胰島素) in the body, which we think contributes to pancreatic cancer cell growth,” President said in a statement.
Writing in the journal Cancer Epidemiology, Biomarkers & Prevention, Pereira and his colleagues said they followed 60,524 men and women in the Singapore—Chinese Health Study for 14 years.
Over that time, 140 of the volunteers developed pancreatic cancer. Those who drank two or more sweetened soft drinks a week had an 87 percent higher risk of being among those who got pancreatic cancer.
Pereira said he believed the findings would apply elsewhere.
“Singapore is a wealthy country with excellent healthcare. Favorite pastimes(消遣) are eating and shopping, so the findings should apply to other western countries.” he said.
But Susan Mayne of the Yale Cancer Center at Yale University in Connecticut was cautious.
“Although this study found a risk, the finding was based on a relatively small number of cases and it remains unclear whether it was a causal(因果的) connection or not.” Said Mayne, who serves on thee board of the journal, which is published by the American Association for Cancer Research.
Pancreatic cancer is one of the deadliest form of cancer, with 230,000 cases globally. In the United States, 37,680 people are diagnosed with pancreatic cancer in a year and 34, 290 die of it.
小題1:We can infer from Pereira’s word that_________
A．the healthcare in Singapore should be greatly improved
B．2 soft drinks a day are considered harmful to health
C．87 out of 140 volunteers developed pancreatic cancer
D．sugar might not be the only cause of pancreatic cancer.
小題2:How does Susan seem to feel about the findings of the study?
A．SatisfiedB．DoubtfulC．WorriedD．Hopeful
小題3:The best title of the text might be_______
A．The Deadliest Forms of Cancer
B．Drink Fruit Juice Instead of Sodas
C．A Study in University of Minnesota
D．Sugary Soft Drinks Lead to Cancer

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Rene Descartes’ explanation of pain has long been acknowledged in medicine. He proposed that pain is a purely physical phenomenon – that tissue injury makes specific nerves send a signal to the brain, causing the mind to notice pain. The phenomenon, he said, is like pulling on a rope to ring a bell in the brain. It is hard to overstate how deeply fixed this account has become. In medicine, doctors see pain in Descartes’ terms— as a physical process, a sign of tissue injury.
The limitations of this explanation, however, have been apparent for some time, since people with obvious injuries sometimes report feeling no pain at all. Later, researchers proposed that Descartes’ model be replaced with what they called the gate control theory of pain. They argued that before pain signals reach the brain, they must first go through a gating mechanism in the spinal cord(脊髓). In some cases, this imaginary gate could simply stop pain signals from getting to the brain.
Their most amazing suggestion was that what controlled the gate was not just signals from sensory nerves but also emotions and other “output” from the brain. They were saying that pulling on the rope need not make the bell ring. The bell itself—the mind— could stop it. This theory led to a great deal of research into how such factors as mood, gender, and beliefs influence the experience of pain. In a British study, for example, researchers measured pain threshold and tolerance levels in 53 ballet dancers and 53 university students by using a common measurement: after immersing your hand in body-temperature water for two minutes to establish a baseline condition, you put your hand in a bowl of ice water and start a clock running. You mark the time when it begins to hurt: that is your pain threshold. Then you mark the time when it hurts too much to keep your hand in the water: that is your pain tolerance. The test is always stopped at 120 seconds, to prevent injury.
The results were striking. On average female students reported pain at 16 seconds and pulled their hands out of the ice water at 37 seconds. Female dancers were almost three times as long on both counts. Men in both groups had a higher threshold and tolerance for pain, but the difference between male dancers and male nondancers was nearly as large. What explains that difference? Probably it has something to do with the psychology of ballet dancers—a group known for self-discipline, physical fitness, and competitiveness, as well as by a high rate of chronic(慢性) injury. Their driven personalities and competitive culture evidently accustom them to pain. Other studies along these lines have shown that outgoing people have greater pain tolerance and that, with training, one can reduce one’s sensitivity to pain.
There is also striking evidence that very simple kinds of mental suggestion can have powerful effects on pain. In one study of 500 patients undergoing dental procedures, those who were given a placebo(安慰劑) injection and promised that it would relieve their pain had the least discomfort— not only less than the patients who got a placebo and were told nothing but also less than the patients who got actual drug without any promise that it would work.
Today it is abundantly evident that the brain is actively involved in the experience of pain and is no more bell on a string. Today every medical textbook teaches the gate control theory as fact. There’s a problem with it, though. It explains people who have injuries but feel no pain, but it doesn’t explain the reverse, which is far more common— the millions of people who experience chronic pain, such as back pain, with no signs of injury whatsoever. So where does the pain come from? The rope and clapper are gone, but the bell is still ringing.
小題1:The primary purpose of the passage is to               .
A．describe how modern research has updated an old explanation
B．support a traditional view with new data
C．promote a particular attitude towards physical experience
D．suggest a creative treatment for a medical condition
小題2:Which statement best describes Descartes theory of pain presented in paragraph 1?
A．The brain can shut pain off at will.
B．The brain plays no part in the body’s experience of pain.
C．Pain can be caused in many different ways.
D．Pain is an automatic response to bodily injury.
小題3:The author implies that the reason why the gate control was “amazing” was that it        .
A．offered an extremely new and original explanation
B．was just opposite to people’s everyday experiences
C．was grounded in an ridiculous logic
D．was so sensible it should have been proposed centuries before
小題4:The author refers to “chronic back pain” as an example of something that is        .
A．costly, because it troubles millions of people
B．puzzling, because it sometimes has no obvious cause
C．disappointing, because it does not improve with treatment
D．worrying, because it lies beyond the reach of medicine
小題5:The last sentence of the passage serves mainly to express that         .
A．scientific judgments are difficult to understand
B．theoretical investigations are generally useless
C．researchers still have a long way to go before the puzzle is made clear
D．there is always something puzzling at the heart of science

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The bedroom door opened and a light went on, signaling an end to nap time．The toddle（初學(xué)走路的嬰兒）, sleepy-eyed, clambered to a swinging stand in his crib．He smiled, reached out to his father, and uttered what is fast becoming the cry of his generation: "iPhone!"
Just as adults have a hard time putting down their iPhones, so the device is now the Toy of Choice for many 1-, 2- and 3-year-olds．The phenomenon is attracting the attention and concern of some childhood development specialists．
Natasha Sykes, a mother of two in Atlanta, remembers the first time her daughter, Kelsey, now 3 but then barely 2 years old, held her husband's iPhone．"She pressed the button and it lit up．I just remember her eyes．It was like 'Whoa!' "The parents were charmed by their daughter's fascination．But then, said Ms．Sykes （herself a Black Berry user）, "She got serious about the phone．" Kelsey would ask for it．Then she'd cry for it．"It was like she'd always want the phone," Ms．Sykes said．
Apple, the iPhone's designer and manufacturer, has built its success on machines so user-friendly that even technologically blinded adults can figure out how to work them, so it makes sense that sophisticated children would follow．Tap a picture on the screen and something happens．What could be more fun?
The sleepy-eyed toddler who called for the iPhone is one of hundreds of iPhone-loving toddlers whose parents are often proud of their offspring's ability to slide fat fingers across the gadget's screen and pull up photographs of their choice．
Many iPhone apps on the market are aimed directly at preschoolers, many of them labeled "educational," such as Toddler Teasers: Shapes, which asks the child to tap a circle or square or triangle; and Pocket Zoo, which streams live video of animals at zoos around the world．
Along with fears about dropping and damage, however, many parents sharing iPhones with their young ones feel guilty．They wonder whether it is indeed an educational tool, or a passive amusement like television．The American Academy of Pediatrics is continually reassessing its guidelines to address new forms of "screen time．" Dr．Gwenn Schurgin O'Keeffe, a member of the academy's council, said, "We always try to throw in the latest technology, but the cellphone industry is becoming so complex that we always come back to the table and wonder- Should we have a specific guideline for them?"
Tovah P. Klein, the director of a research center for Toddler Development worries that fixation on the iPhone screen every time a child is out with parents will limit the child's ability to experience the wider world.
As with TV in earlier generations, the world is increasingly divided into those parents who do allow iPhone use and those who don't. A recent post on UrbanBaby.com, asked if anyone had found that their child was more interested in playing with their iPhone than with real toys. The Don't mothers said on the Website: "We don't let our toddler touch our iPhones ... it takes away from creative play." "Please ... just say no. It is not too hard to distract a toddler with, say ... a book."
Kathy Hirsh-Pasek, a psychology professor who specializes in early language development, sides with the Don'ts. Research shows that children learn best through activities that help them adapt to the particular situation at hand and interacting with a screen doesn't qualify, she said.
Still, Dr. Hirsh-Pasek, struck on a recent visit to New York City by how many parents were handing over their iPhones to their little children in the subway, said she understands the impulse (沖動). "This is a magical phone," she said. "I must admit I'm addicted to this phone."
小題1:The first paragraph in the passage intends to ______.
A．get us to know a cute sleepy-eyed child in a family
B．show us how harmful the iPhone is
C．lead us to the topic of the toddlers' iPhone-addict
D．explain how iPhone appeals to toddlers
小題2:According to the author, iPhones are popular with both adults and young kids because they are______.
A．easy to useB．beautiful in appearance
C．cheap in priceD．powerful in battery volume
小題3:The underlined word "them" in the seventh paragraph refers to ______.
A．televisionsB．cellphonesC．iPhonesD．screens
小題4:The tone of the author towards parents sharing iPhones with their children is ______.
A．negativeB．subjectiveC．objectiveD．supportive
小題5:The passage mainly tells us ______.
A．children's iPhone addict is becoming a concern
B．iPhone is winning the hearts of the toddlers
C．Apple is developing more user-friendly products
D．ways to avoid children's being addicted to iPhone games

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

When Scotsman Alexander Graham Bell invented the telephone in 1876, it was a revolution in communication． For the first time, people could talk to each other over great distances almost as clearly as if they were in the same room． Nowadays, though, we increasingly use Bell' s invention for taking photographs, accessing the internet, or watching video clips, rather than talking． Over the last two decades a new means of spoken communication has appeared: the mobile phone．
The first real mobile telephone call was made in 1973 by Dr Martin Cooper, the scientist who invented the modem mobile handset． Within a decade, mobile phones became available to the public． The streets of modem cities began to feature sharp-suited characters shouting into giant plastic bricks． In Britain the mobile phone quickly became the same with the "yuppie" , the new type of young urban professionals who carried the expensive handsets as status symbols． Around this time many of us said that we would never own a mobile phone．
But in the mid-90s, something happened． Cheaper handsets and cheaper calling rates meant that, almost overnight, it seemed that everyone had a mobile phone． And the giant plastic bricks of the 80s had changed into smooth little objects that fitted nicely into pockets and bags．
Moreover, people' s timekeeping changed． Younger readers will be amazed to know that, not long ago, people made spoken arrangements to meet at a certain place at a certain time． But later Meeting times became approximate under the new order of communication: the Short Message Service （SMS） or text message． Going to be late? Send a text message! It takes much less effort than arriving on time, and it' s much less awkward than explaining your lateness face to face and the text message has changed the way we write in English． Traditional rules of grammar and spelling are much less important when you' re sitting on the bus, hurriedly typing "Will B 15mm late - C U @ the bar． Sorry! - ）"．
Alexander Graham Bell would be amazed if he could see how far the science of telephony has progressed in less than 150 years．If he were around today, he might say "That' s gr8! But I' m v busy rite now．Will call U 2nite．"
小題1:What does the underlined part in Para． 2 refer to?
A．Houses of modern cities．B．Sharp-suited characters．
C．New type of professionals．D．Mobile phones．
小題2:According to Paragraph 4, why did Meeting times become approximate?
A．People were more likely to be late for their meeting．
B．SMS made it easier to inform each other．
C．Young people don' t like unchanging things．
D．Traditional customs were dying out．
小題3:If you want to meet your friend at the school gate this evening, which of the following message can you send him?
A．Call U@ SKUg8 2nite．B．IM2BZ2CU 2nite．
C．CU@ the bar g8 2nite．D．W84U@ SKUg8 2nite．
小題4:What does the passage mainly tell us about?
A．Alexander Graham' s invention．
B．SMS @ a new way of communication．
C．New functions of the mobile telephone．
D．The development of the mobile phone．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

What exactly is intelligence? There aren’t any easy answers．Despite the progress that has been made in genetics and psychology, human intelligence has remained one of the most controversial areas of modern science，until now, that is, for the discovery of a gene linked to intelligence has made the experts think again．
Robert Plomin of the Institute of Psychiatry in London and his colleagues in the US have been looking into genetic make-up．From their research, they have discovered that a slightly different gene is more common in those with a high IQ．Plomin analyzed DNA from two groups of 51 children aged between 6 and 15．What he found was that the first group had an IQ of 136, putting them in the top 5% of the population, while the other group had an average IQ of 103．An analysis of their genes showed that 32% of children in the higher group had the gene in question, while only 16% in the second group did．However, there is a lot more research to be done, and Plomin himself is cautious at this early stage．He suggests that there are probably many genes that contribute to intelligence, rather than just one. Several studies have shown a strong link between IQ and career success, although some psychologists remain unconvinced about this．Professor Michael Rowe, who has written a book called Genius Explained, is one of these．“The people with the highest IQs are not usually the ones who do best in their careers．”
Many psychologists now believe that when it comes to intelligence, IQ isn’t everything．Many alternative views have been put forward recently．One example is the idea of multiple intelligences, which was developed in the 1980s by Harvard psychologist Howard Gardner．This offers a much broader view than the IQ theory, including creativity and communication skills as relevant factors in intelligence．
Tony Buzan, brain expert and author of Master your Memory, is enthusiastic about this belief, arguing that true geniuses do indeed appear to combine high levels of each type of intelligence．He lists Alexander the Great, Pablo Picasso and Albert Einstein as examples．At the same time, Buzan believes that everyone can develop their intelligence, only if they take the trouble to exercise their brain．Perhaps there’s hope for us all!
小題1:What does the underlined word “This” in Paragraph 3 refer to?
A．The development of intelligence
B．The idea of multiple intelligences
C．IQ isn’t everything for intelligence
D．Alternative views have been put forward
小題2:Why does the author use data in Paragraph 2?
A．To make a suggestion．B．To draw a conclusion
C．To prove an idea．D．To give an example
小題3:What can we learn from the passage?
A．Robert Plomin confirms genes have something in common
B．Howard Gardner thinks intelligence includes various factors
C．Michael Rowe approves of a strong link between IQ and career
D．Tony Buzan agrees geniuses exercise brain to improve intelligence
小題4:What might be the best title of the passage?
A．The relationship between genes and intelligence
B．IQ benefits a lot from high intelligence
C．How to develop intelligence．
D．What makes intelligence.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: their means of communicating, capturing prey, meeting mates and protecting themselves. A web-building spider without its web is like a men cast away on an island of solid rock，totally out of touch and destined to starve to death. So important is the web to an orb-web spider's survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier, it constructs a wider-meshed （網(wǎng)孔、網(wǎng)眼）web using fewer strands（線）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider. The spider stores energy by recycling web protein. It simply eats its own web each evening and reuses it to produce new silk. In studies with radioactivity, labeled materials, it was found that 95 percent of web protein reappears in the next day web. Most of the energy needed for web-building is used in walking over the strands as they are laid down. Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（無脊推動物）. If web-building is interrupted, or if some of the existing strands are destroyed, the spider simply goes back to see where the web is left off and then finishes building a normal web. One spider will finish building the incomplete web of another.
小題1:Which of the following best expresses the main ideas of the passage?
A．Secrets of Spiders' Adaptability
B．Importance of Webs to Spiders
C．Secrets of the Spiders' Life
D．Spiders' Highly Preprogrammed Brain
小題2:According to the passage, which of the following statements is TRUE?
A．Most spiders will stop conducting webs when hungry.
B．One Web-building spider usually conducts one web.
C．Web-building spiders will probably die without their webs.
D．Web-building spiders have good eyesight.
小題3:The underlined word “scrawnier” in the second paragraph probably means ______. 
A．weaker but good-looking
B．fatter and stronger
C．nice and healthier
D．thinner and bony
小題4:A spider's ability to finish an incomplete web proves that ______.
A．it has a highly preprogrammed brain
B．it reuses its web protein to reproduce new silk
C．the web is everything for a spider
D．it is able to rebuild a destroyed web

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Here is an astonishing and signficant fact:Mental work alone can’t make us tired. It sounds absurd. But a few years ago, scientists tried to find out how long the human could labor without reaching a stage of fatigue(疲勞). To the amazement of these scientists, they discovered thett blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day labourer, we could find it full of fatigue toxins(毒素) and fatigue products. But if we took blood from the brain of Albert Einstein, it would show no fatigue toxing at the end of the day.
So far as the brain is concerned, it can work as well and swiftly at the end of eight or even twelve hours f efforts as at the beginning. The brain is totally tireless. So what makes us tired.
Some scientists declare that most of our fatigue come from our mental and emotional(情感的) attitudes. One of England’s most outstanding scientists. J. A. Hadfield,says,“The greater part of the fatigue from which we suffer is of mental origin. In fact,fatigue of purely physical origin is rare.” Dr. Brill, a famous American scientist, goes even further. He declares,“One hundred percent of the fatigue of a sitting worker in good health is due to emotional problems.”
What kinds of emotions make sitting workers tired?Joy?Satifaction?No!A feeling of being bored,anger,anxiety,tenseness,worry,a feeling of nt being appreciated---those are emotions that tire sitting workers.Hard work by itself seldom causes fatigue.We get tired because our emotions produce nervousness in the body.
小題1:What surprised the scientists a few years ago?
A．Fatigue toxinscould hardly be found in a labour’s blood.
B．Albert Eistein didn’t feel worn out after a day’s work.
C．The brain could wrk for many hours without fatigue.
D．A mental worker’s blood was filled with fatigue toxins.
小題2:According to the authour,which of the following can make sitting worker tired？
A．Challenge mental work.
B．Unpleasant emotions.
C．Endless tasks.
D．Physical labor.
小題3:What’s the authour’s attitude towards the scientists’ ideas?
A．He agrees with them.
B．He doubts them
C．He argues against them.
D．He hesitates to accept them.
小題4:We can infer from the passage that in order to stay energic, sitting workers need to ______.
A．have some good blood
B．enjoy their work
C．exercise regularly
D．discover fatigue toxin

查看答案和解析>>

同步練習(xí)冊答案
色婷婷在线影院| 手机av在线网站| 亚洲天堂资源在线| 日日夜夜操视频| 久章草在线视频| 久久久久久成人网| 欧美一级视频免费| 黄色在线观看国产| 国产精品97在线| 99久久精品久久亚洲精品| www.国产三级| 亚洲午夜18毛片在线看| 久草资源站在线观看| 成人一级片免费看| 爱情岛论坛亚洲自拍| 黄色大全在线观看| 国产精品自在自线| 国产一二三在线视频| 国产综合精品在线| 香港三日本三级少妇66| 免费在线不卡av| 999热精品视频| 免费看国产曰批40分钟| 亚洲一区电影在线观看| 91精品啪在线观看国产| 国产欧美一区二区三区视频在线观看| 久久网免费视频| 成人精品视频一区二区| 7777在线视频| 国产破处视频在线观看| 影音先锋资源av| 午夜老司机福利| 久久久精品毛片| 国产在线视频二区| 另类小说第一页| 欧美男女爱爱视频| 国产三级国产精品国产国在线观看| 人体私拍套图hdxxxx| 日日夜夜精品免费| 99热这里只有精品3| 无码人妻黑人中文字幕| 久久免费少妇高潮99精品| 美女黄色片视频| 玩弄中年熟妇正在播放| 黄黄视频在线观看| 蜜桃av免费在线观看| 欧美黑人欧美精品刺激| 欧美丰满熟妇bbb久久久| 午夜精品久久久久久久爽| 在线观看毛片视频| 婷婷激情五月综合| 亚洲男人的天堂在线视频| 久久精品www人人爽人人| 久久综合伊人77777麻豆最新章节| 99色这里只有精品| 丁香六月激情网| 欧美一级特黄aaaaaa在线看片| 日本黄区免费视频观看| 国产美女免费无遮挡| av在线播放网址| av电影中文字幕| 男男受被啪到高潮自述| 亚洲av成人无码久久精品老人| 午夜精品在线播放| 精品人妻无码一区二区| 国产农村妇女毛片精品| 国产精品无码久久av| 国产精品毛片一区二区在线看舒淇| 国产精品传媒在线观看| 日本妇乱大交xxxxx| 最近中文字幕免费观看| 中文字幕无线码一区| 亚洲第一区av| 91一区二区视频| 国产美女免费视频| 国产一区二区三区中文字幕| 亚洲熟妇无码久久精品| 91精品人妻一区二区三区果冻| 在线视频 91| 国产毛片毛片毛片毛片| 国产黄色小视频在线观看| www.日本一区| 国产探花在线观看视频| 久久人人爽人人片| 日本三级欧美三级| 日韩手机在线视频| 最新中文字幕免费| 国产情侣在线播放| 天堂成人在线观看| 欧美激情一区二区三区p站| 日本japanese极品少妇| 成人性生交大片免费看无遮挡aⅴ| 成人在线手机视频| 亚洲第一精品区| 黄页免费在线观看视频| www.99在线| 国产精品suv一区二区69| 国产字幕在线观看| 性做久久久久久久| 亚洲一级Av无码毛片久久精品| 人妻大战黑人白浆狂泄| 黄色录像一级片| www.国产在线播放| 久热精品在线播放| 韩国av中文字幕| aaa国产视频| 四虎成人免费视频| 国产jizz18女人高潮| 国产爆乳无码一区二区麻豆| 97xxxxx| 久久久久人妻一区精品色欧美| 天堂网中文字幕| 午夜免费福利视频| 性久久久久久久久久| 久草综合在线视频| 人妻有码中文字幕| 国产亚洲自拍av| 国产又大又粗又硬| 在线播放av网址| 中文字幕第69页| 欧美视频在线观看网站| 久久成人国产精品入口| 国产一区二区视频免费观看| 女同性αv亚洲女同志| 2017亚洲天堂| 国产午夜伦鲁鲁| 69精品久久久| 午夜精品一区二区三| 三级电影在线看| 大陆极品少妇内射aaaaaa| 亚洲免费一级视频| 波多野结衣在线电影| 日韩久久久久久久久久久| 国产精品视频在| 黑人糟蹋人妻hd中文字幕| 日韩网红少妇无码视频香港| 亚洲黄色在线观看视频| 日本人亚洲人jjzzjjz| 欧美a v在线播放| 免费看日韩毛片| 人人妻人人澡人人爽精品日本| 亚洲精品视频网址| 国产欧美高清在线| 免费黄色一级大片| 亚洲熟女乱综合一区二区三区| 色哟哟免费网站| 欧美日韩免费一区二区| 99久久99久久久精品棕色圆| 亚洲精品国产91| 欧美三级午夜理伦三级| 无码人妻aⅴ一区二区三区有奶水| 免费国偷自产拍精品视频| 亚洲欧美日韩不卡| 久久精品国产av一区二区三区| 亚洲第九十九页| 欧美第一页在线观看| 亚洲精品久久久久久宅男| 国产精品玖玖玖| 色www亚洲国产阿娇yao| 黄大色黄女片18第一次| www.xxxx国产| 小说区视频区图片区| 精品午夜福利在线观看| 乳色吐息在线观看| 亚洲精品久久久久久久蜜桃臀| 日韩欧美不卡视频| 五月婷婷丁香六月| 欧美美女黄色网| 中文字幕精品无码一区二区| 国产精品久久不卡| 噼里啪啦国语在线观看免费版高清版| 中文在线字幕免费观| 性高潮久久久久久久| 国产精品无码av无码| 国产美女www| 91视频免费在观看| 欧美国产日韩另类 | www.黄色片| 九九热最新地址| 日韩成人免费在线视频| 精品1卡二卡三卡四卡老狼| 成熟丰满熟妇高潮xxxxx视频| 在线观看中文字幕2021| 日韩在线一卡二卡| 日韩av女优在线观看| 成人网站免费观看| 男人的天堂最新网址| 久久黄色一级视频| 欧美一级黄色片视频| 乱色精品无码一区二区国产盗| 一区二区的视频| eeuss中文字幕| 男人天堂中文字幕| 国产一级二级在线观看| 久久撸在线视频| 亚洲妇女无套内射精| 无码人妻丰满熟妇区五十路百度| 中文在线观看免费高清| 青青青在线免费观看| 欧美一区二区三区不卡视频| 东京热无码av男人的天堂| 好吊操这里只有精品| 一级片久久久久| 2014亚洲天堂| 日产精品久久久久久久| 欧美熟妇激情一区二区三区| 欧美日韩免费一区二区| 亚洲熟妇无码av| 久久久国产成人| 少妇久久久久久久久久| 17c国产在线| 中文字幕在线免费看线人| 欧美性猛交xxxx乱大交91| 久久久午夜精品福利内容| 免费看污污网站| 国产xxxxxxxxx| 久久精品波多野结衣| 欧美人与性囗牲恔配| 99免费在线观看| 久久久久久视频| ,一级淫片a看免费| 免费在线观看亚洲视频| 五月婷婷开心中文字幕| 亚洲午夜激情影院| 无码少妇一区二区| 日本中文字幕在线观看视频| 国产91porn| 色wwwwww| 国产xxxxhd| 大地资源高清在线视频观看| 久久影视中文字幕| 成人小视频在线观看免费| 日本国产在线观看| 国产资源中文字幕| 中国1级黄色片| 一级日韩一级欧美| 国产激情在线观看视频| 日本少妇色视频| 日韩一级在线视频| 97干在线视频| 亚洲欧美日韩偷拍| 天堂中文字幕在线观看| 午夜精品久久久久久久91蜜桃| 免费无码国产v片在线观看| 国产成人精品无码片区在线| 黄网在线观看视频| 国产日本在线播放| 色哟哟视频在线| 国产又黄又粗又爽| 男的插女的下面视频| 又黄又色的网站| 久久久久久久久久影院| 国产乱人伦精品一区二区三区| 一起草最新网址| 日韩视频免费观看高清| 欧美a级免费视频| 日本人添下边视频免费| 国产午夜精品久久久久| 男人天堂1024| 精品人伦一区二区| a级片在线免费看| 青青草手机在线观看| 大地资源网在线观看免费官网| 亚洲欧洲国产综合| 日日骚av一区二区| 日本成人在线免费视频| 992在线观看| 日韩一级片免费看| 国产精品视频久久久久久久| 成人免费观看在线| 国产情侣久久久久aⅴ免费| 极品国产91在线网站| 国产精彩免费视频| 九九精品视频免费| 伊人久久久久久久久| 日批视频免费观看| 午夜不卡福利视频| 日本一级黄视频| 中文字幕 自拍| 欧洲av在线播放| 好吊色在线视频| 国产日韩欧美久久| 伊人再见免费在线观看高清版 | 波多野结衣办公室33分钟| 一级成人免费视频| 日日夜夜精品视频免费观看 | 久久国产精品波多野结衣av| 2019日韩中文字幕mv| 亚洲av成人无码久久精品| 嫩草影院一区二区| 国产精品久久久久久久久夜色| 九九热精品在线播放| 少妇一晚三次一区二区三区| 日韩人妻一区二区三区| 亚洲av激情无码专区在线播放| 一区二区乱子伦在线播放| 强行糟蹋人妻hd中文| 18禁免费无码无遮挡不卡网站| 麻豆一区在线观看| 一区二区三区少妇| 色欲av伊人久久大香线蕉影院| 欧美性受xxx黑人xyx性爽| 久久一二三四区| 一区二区三区 欧美| 91免费黄视频| 天天干天天操天天干天天操| 亚洲理论片在线观看| 又黄又色的网站| 亚洲高清视频网站| 夜夜嗨aⅴ一区二区三区| 日韩精品――中文字幕| 国产又黄又猛的视频| 99热在线这里只有精品| 大陆极品少妇内射aaaaaa| 999久久久国产| 黄瓜视频污在线观看| 又黄又色的网站| 刘亦菲毛片一区二区三区| 91禁在线观看| 中文字幕在线观看1| 亚洲熟女综合色一区二区三区| 青青操视频在线播放| 蜜臀视频一区二区三区| av7777777| 人人妻人人做人人爽| 色婷婷777777仙踪林| 男人av资源站| 国产综合精品久久久久成人av| 蜜臀av一区二区三区有限公司| yjizz视频| 国产婷婷在线观看| 日本69式三人交| 性欧美18—19sex性高清| 亚洲精品激情视频| 亚洲免费观看在线| 日本wwwwwww| 性xxxxxxxxx| 亚洲成人福利视频| 欧洲成人午夜精品无码区久久| 蜜臀av免费在线观看| 少妇荡乳情欲办公室456视频| 性欧美videos另类hd| 成人av一区二区三区在线观看| 国产欧美久久久精品免费| 97免费观看视频| 99久久精品无免国产免费| 国产夫妻自拍av| 懂色av蜜臀av粉嫩av分享吧| 亚洲精品成人区在线观看| 国精产品一品二品国精品69xx| av官网在线观看| 国产77777| 凸凹人妻人人澡人人添| 西西人体44www大胆无码| 波多野结衣三级视频| 久久精品无码专区| 国产精品一级黄片| 国产亚洲精品熟女国产成人| 一本在线免费视频| 97超碰人人爱| 久在线观看视频| 日本黄色三级大片| 亚洲一级免费在线观看| 久久久国产精品黄毛片| 久久这里只有精品国产| 日韩欧美在线观看免费| 亚洲综合精品在线| 日本黄视频在线观看| 免费不卡的av| 日韩黄色中文字幕| 午夜探花在线观看| 欧美成人一区二区在线观看| 免费涩涩18网站入口| 久久艹精品视频| 国产一级片免费在线观看| 国产高清第一页| 国产人妻黑人一区二区三区| 欧美成人另类视频| 300部国产真实乱| 国产1区2区在线| 久久久精品国产sm调教| 小泽玛利亚一区二区三区视频| 国产 日韩 欧美 精品| 国产精品无码专区| 9999在线观看| 欧美成人免费高清视频| 国产精品自拍视频一区| 国产又黄又大又爽| 中文字幕天堂av| 中文字幕人妻一区二| 亚洲爆乳无码专区| 日韩欧美国产亚洲| 精品久久国产视频| 精品人妻一区二区三区日产乱码卜| 欧美日韩色视频| 成人一级片网站| 国产高清中文字幕| 黑人精品一区二区| 国产精品视频在| 波多野结衣家庭教师视频|