It is natural that children are curious (好奇的) about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
　　As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、職業(yè)) in science.
　　Scientists spend their lives trying to find out about the world. Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
　　These scientists have already discovered a lot about our world. For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
　　Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
　　We know a lot about our world, but there are still many answers that we do not have, and we are curious.
小題1:According to the passage, which of the following statements is true?
A．People are curious in the same way.
B．People in different countries are interested in different things.
C．Men and women are curious about different things.
D．People of different ages are interested in different things
小題2:Scientists who work with the biological sciences study____.
A．the earth , the oceans and the sky B．man-made things
C．plants and animals D．ocean water
小題3:When you run, your muscles need ____.
A．more nutrition and oxygenB．more signals
C．more saltD．water
小題4:A rock cracks _____.
A．in wet regions B．in dry regions
C．a(chǎn)t very high or very low temperaturesD．when salty water falls in
小題5:People are always curious because ____.
A．they cannot explain many thingsB．they know nothing about the world
C．they know little about the world D．they want to be scientists
小題1:D小題1:C小題1:A小題1:C小題1:A
略
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

Broken rubber bands and flat tires requiring replacement could soon be a thing of the past．
French researchers have developed a new kind of rubber that can repair itself when broken．The new rubber is made from widely available materials including vegetable oil and a common industrial chemical．All the materials are considered safe to the environment and can be easily reused．
The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch．When cut, the rubber can be made new again, simply by pressing the two broken ends back together．
The product can be repaired at room temperature, around twenty degrees Centigrade；other self-healing materials require higher temperatures for repair．
Traditionally, rubber substances are made from huge molecules（分子）connected by strong chemical links, or bonds．The new rubber is made of smaller molecules．The molecules are linked together using hydrogen bonds．When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks（超分子網(wǎng)）．When the rubber is cut, the molecules attempt to connect with whatever molecule is near them．When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new．
However, time is an important element in the process．If the broken ends are not brought together quickly, a repair is not possible．This is because molecules will form bonds with molecules on their own side．The inventors say the surfaces of the rubber can be repaired within a week of being separated．
The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris．The organization is part of France’s National Center for Scientific Research．The new material is described in greater detail in the research publication Nature．
小題1:According to the introduction, which of the following is NOT the advantage of the new rubber?
A．It can be made as easily as common rubber．
B．It is environmentally-friendly．
C．It can repair itself at room temperature．
D．It is made of smaller molecules．
小題2:What does the 5th paragraph mainly tell us?
A．Why the new rubber is unique．
B．Why the new rubber can repair itself．
C．The new rubber is made from huge molecules．
D．The new rubber is different from the common rubber．
小題3:If we want to know more about the technology of this kind of new rubber, where can we get the information?
A．In the researchers’ diary．B．In a guide book．
C．In a research magazine．D．In a newspaper．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

完形填空（共20小題，每小題1.5分，滿分30分）
閱讀下面短文，掌握其大意，然后從36---55所給的四個(gè)選項(xiàng)（A、B、C、D）中，選出最佳選項(xiàng)。
The first day of school our professor introduced himself and challenged us to get to know a new classmate. I stood up to 36  when a gentle hand   37   my shoulder. I turned around to find a wrinkled, little old lady looking up at me with a  38  .
She said, “Hi. My name is Rose. I’m eighty-seven years old. Can I give you a 39  ?” I laughed and enthusiastically responded, “Of course you may!” and she gave me a giant squeeze (an act of pressing).
“Why are you in college at such a young,    40  age ?”I asked. “I always dreamed of having a  41   experience and now I’m getting   42  !” she told me.
Later, we became close friends. Every day we would leave class together and she   43   her wisdom and  44   with me. Over the course of the year, Rose became a (an)    45  icon（偶像） and she easily made friends wherever she went.
At the  46  of the term we invited Rose to speak at our football banquet. I’ll never forget what she taught us. When she was  47  , frustrated and a little embarrassed, she cleared her  48  and said, “We do not stop playing because we are old; we  49  old because we stop playing. There are only two secrets to staying   50  , being happy, and achieving success. You have to laugh and find 51   every day. You’ve got to have a dream. When you lose your dreams, you  52  .”
One week after graduation Rose died   53   in her sleep. Many college students attended her funeral in tribute to（悼念）the wonderful woman who taught us by    54  that it’s never too late  to 55  all you can possibly be.
小題1:
A．look around B．look back C．look downD．look up
小題2:
A．hitB．feltC．touchedD．knocked
小題3:
A．surpriseB．smileC．wonderD．pleasure
小題4:
A．hand B．welcomeC．hugD．gift
小題5:
A．innocentB．goldenC．happy D．valuable
小題6:
A．collegeB．junior high school C．senior high school D．primary school
小題7:
A．itB．thatC．oneD．them
小題8: A. shared         B. told               C. learned            D. debated
小題9:
A．course B．experienceC．degreeD．happiness
小題10:
A．old B．great C．campusD．outgoing
小題11:
A．endB．middleC．beginningD．top
小題12:
A．invitedB．a(chǎn)ppearingC．speakingD．introduced
小題13:
A．noseB．faceC．throatD．eyes
小題14:
A．look B．proveC．growD．stay
小題15:
A．healthy B．youngC．cheerfulD．rich
小題16:
A．humorB．goals C．dreamsD．jokes
小題17:
A．loseB．failC．dieD．disappoint
小題18:
A．hopefullyB．peacefullyC．fortunatelyD．bitterly
小題19:
A．experienceB．exampleC．pleasureD．courage
小題20:
A．be B．a(chǎn)chieve C．gainD．do

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The most important use of drifting (漂流) bottles is to find ocean currents. When the position and direction of currents are known, ships can use the forward movement of a current or stay away from currents that would carry them off their course. Benjamin Franklin was one of the first to use bottles in the study of currents. He wondered why British mall ships needed a week or two longer than U.S. ships needed in order to cross the Atlantic Ocean. Franklin thought the Gulf Stream (墨西哥灣流) might explain this difference.
Franklin talked with captains of U.S. ships. He found that they knew each turn of the Gulf Stream. They used the current in every possible way. From his talks with the captains. Franklin made his first map of the Gulf Stream. Then he checked his map by using sealed (密封的) bottles. The map that he finally made is still used, with only a few changes, today. 
小題1: Why are drifting bottles used?
A．To determine the position of a ship
B．To carry message across the ocean
C．To predict the direction of a ship.
D．To find the direction of a current
小題2:What led Franklin to talk with U.S. captains?
A．U.S. ships were longer than British ones.
B．British ships could sail the Atlantic faster than U.S. ones.
C．U.S captains knew more about maps.
D．U.S. ships could sail the Atlantic faster than U.S. ones.
小題3:What did Franklin make after his talks with U.S. captains?
A．A map of the Atlantic Ocean.B．A map of the Gulf Stream..
C．A map of ocean currents.D．A map of his first voyage.
小題4:What did Franklin do in order to make an exact map?
A. He compared his own map with other maps
B. He talked with many U.S. captains.
C. Both B and C.
D. He used drifting bottles to check his map.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Britain's most popular lie has been disclosed, with one in four people admitting using "sorry I had no signal" when returning a missed mobile phone call, a survey found．
Researchers found the average Briton tells on average four lies every day or almost 1500 every year． Almost one in six men admitted they were most likely to lie to their wife or girlfriend, on average at least twice a day．The most popular lie was saying you had no mobile phone signal．with one in four people admitting regularly using the little white He．It usually came after they hit the "ignore" button when their mobile rang．
Three quarters of people think women are better Hare．The research found 46 per cent of girls have been caught lying, compared to 58 of men．
The second most common fib（無關(guān)緊要的謊言） is “I haven't got any cash on me" when asked for money by tramps （流浪者）．beggars and Big Issue sellers．"Nothing's wrong - I'm fine" came third followed by "You look lovely" and "Nice to see you"．
Modern technology turned out to have contributed to many lies with "I didn't get your text" in 18th．"Our server was down" in 20th and "My battery died" in 26th place．
Other lies to make the top ten included "I'll give you a ring", "We're just good friends" and "We'll have to meet up soon"．"I'm on my way" and "No, your bum doesn't look big in that" completed the top ten．
Men tell the most fibs, coming out with five every day compared to women who lie just three times． In many cases perhaps it is better to flatter with a fib than destroy someone with the truth, according to a spokesman for OnePoll, which carried out the research of 4．300 adults．
小題1:Whether the person being called has pushed the "ignore" button or _____．the caller at the other end hears the same tone．
A．really has no signalB．can't get the text
C．has a battery failureD．a(chǎn)nswers the call
小題2:Most people think women are better liars because _____．
A．there're more women liarsB．fewer women liars are found out
C．women tell less harmful liesD．women are harder to convince
小題3:"Our server was down" is perhaps a lie told as an excuse for not _____．
A．inviting a friend to dinnerB．responding to an e - mail
C．coming to a party on timeD．cleaning one's room
小題4:"You look lovely" and "I'm on my way" rank _____ on the popular - lie list．
A．3rd and 8thB．5th and 10th
C．4th and 9thD．5th and 12th
小題5:The OnePoll spokesman seems to think it's _____ for the British to lie so much．
A．puzzlingB．disgustingC．impossibleD．reasonable

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Recently,university students around the world were asked to volunteer in a global experiment called Unplugged.It was designed to see how young people would react if they were asked to observe a total media ban by unplugging all forms of media devices for 24 hours.
Unplugged is being run by Dr Roman Gerodimos，a lecturer in Communication and Journalism at Bournemouth University.During the experiment，Dr Gerodimos said there were already  signs of how much the exercise affected volunteers.He said：“They’re reporting withdrawal symptoms，overeating，feeling nervous，isolated and disconnected.”
During their 24-hour test，three of the experiment’s participants were followed around by a BBC reporter plus cameraman.They were asked to write down 100 lines about their day offline，but of course，they all waited until the next day when they had access to their laptops.
Elliot Day wrote：“Today,my whole morning routine was thrown up into the air.Despite being  aware of the social importance of the media,I was surprised by how empty my life felt without the radio or newspapers.”
From Caroline Scott，we read：“I didn’t expect it，but being deprived of the media for 24 hours resulted in my day-to-day activities becoming so much harder to carry out than usual…I didn’t break out in a cold sweat like our lecturer expected us all to，but It’s not something l would like to do again！”
And Charlotte Gay wrote：“I have to say the most difficult item for me to be without has been  my  mobile；not  only is it a social device，it’s  my main access point of communication.”
Earlier in the year,a UK government study found that in the UK we spend about half our waking hours using the media,often plugged into several things at once.So,with technology continuing to develop at an alarming rate,how much time will you set aside for sleep in the future?
小題1:What can we learn about the volunteers?
A．Volunteers didn’t write down about their day offline.
B．Volunteers weren’t allowed to use any media for 24 hours.
C．Volunteers were followed around by Dr Roman Gerodimos.
D．Only volunteers in the UK took part in Unplugged experiment.
小題2:Which of the following is NOT mentioned about the participants’feelings？
A．Anxious. B．Lonely C．Bored.D．Despaired.
小題3:Which of the following is true of Caroline Scott？
A．The media ban affected his temperature.
B．His work went on smoothly without the media.
C．His work was carried on hard without the media.
D．His life was empty without the radio or newspapers.
小題4:What can be inferred from the last paragraph?
A．People should use the media devices reasonably.
B．People can easily survive the media devices addict.
C．People can spend more time sleeping in the future.
D．People spend about half the time using the media devices.
小題5:The text is most probably a         .
A．newspaper adB．book review
C．news report D．science fiction story

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

  Dolphins and sharks are showing up in surprisingly shallow water just off the Florida coast．Mullets，crabs，rays and small fish gather by the thousands off an Alabama pier．Birds covered in oil are crawling（爬）deep into marshes（沼澤），never to be seen again．
Marine scientists studying the effects of the BP disaster（英國石油公司漏油事件）are seeing some strange phenomena．Fish and other wildlife seem to be fleeing the oil out in the Gulf and gathering in cleaner waters along the coast in a trend that some researchers see as a potentially troubling sign．The animals.presence close to shore means their usual habitat is badly polluted，and the crowding could result in mass die-offs as fish run out of oxygen．Also，the animals could easily be captured by their enemies．
The nearly two-month-old spill（漏油）has created an environmental disaster in US history as tens of millions of gallons have flown into the Gulf of Mexico ecosystem．Scienfists are seeing some unusual things as they try to understand the effects on thousands of species of marine life．For nearly four hours Monday，a three-person crew with Greenpeace cruised（巡航）past delicate islands and mangrove-dotted inlets in Barataria Bay off southern Louisiana．They saw dolphins by the dozen frolicking（嬉戲）in the oily sheen（光澤）and oil-tinged pelicans feeding their young．But they spotted no dead animals．
“I think part of the reason why we’re not seeing more yet is that the impacts of this crisis are really just beginning，”Greenpeace marine biologist John Hocevar said．
The counting of dead wildlife in the Gulf is more than an academic exercise；the deaths will help determine how much BP pays in damages．
小題1:What do the marine life react to the BP disaster？
A．Dolphins and sharks show up in deep water．
B．Tens of thousands of marine animals are found dead．
C．Sea creatures flee from oil spill，gathering near seashore．
D．Birds crawl（爬）deep into caves．
小題2:The environmental disaster was caused by       ．
A．the lack of environmental sense of BP
B．the nearly two-mouth-old oil spill
C．the crowding marine life
D．the damage of Mexico Gulf ecosystem
小題3:What is John Hocevar’s attitude towards the disaster？
A．DisappointedB．DepressedC．NeutralD．Worried
小題4:From the passage，we can infer that         ．
A．marine scientists have seen some strange phenomena．
B．the disaster has little influence on dolphins．
C．a(chǎn) three-person crew reached no conclusion．
D．BP will pay much money according to the number of dead wildlife there．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

For an owl (貓頭鷹) with one-metre wingspan, the sky should be the limit. But Troy prefers his bird’s eye view to be no higher than 5 feet 10 inches. The one-year-old owl has an inconvenient symptom: he’s afraid of heights. After an unfortunate start in life when he fell from his nest by accident, Troy was raised by Gareth Tonen, a handler (飼養(yǎng)員), who just happens to be 5 feet 10 inches tall.
As a result, Troy has grown up without any great ambitions of his own. When it comes to trees, he can’t see what is about and would prefer to fly along at Mr. Tonen’s side. Only when the 25-year-old handler climbs up a tree can Troy be tempted to leave his comfort zone and join him.
Ashley Smith said, “ Troy’s fear of heights was a result of forgetting how to be a bird. He’s been in captivity (被圈養(yǎng)) for as long as he can remember and has never been higher than his handler can lift him. He sees himself as more of a human than an owl, and he doesn’t know how to sit in trees or hunt. Gareth has to almost act like an owl to get Troy to behave like one.”
As a result, a daily tree climb has become part of Troy’s – and Mr. Tonen’s – routine. Ladders have been fixed so Mr. Tonen can climb into the trees and call for Troy, who will fly up and join his handler but go no higher. Most of the time he flies down again, but occasionally Mr. Tonen has to carry him back to ground level. The afternoon ends with a meal of mouse, rabbit or his favorite, chicken.
Mr. Tonen said, “He now looks upon me as his mum or dad. He’s gaining more confidence and if I have to carry on climbing up trees with him then we’ll do what it takes for him to be a high flyer.
小題1:Troy was brought up by Gareth Tonen because he ______.
A．couldn’t fly highB．got badly hurt
C．left his parents accidentallyD．couldn’t live in trees
小題2: What can you learn from the second paragraph?
A．Troy doesn’t show any interest in flying high up in the sky.
B．Gareth Tonen has spoiled Troy by offering him everything.
C．Gareth Tonen is pleased to see Troy fly along at his side.
D．Troy would like his owner Gareth Tonen to climb up trees.
小題3:According to Ashley Smith, Troy doesn’t know he is a bird because ______.
A．he has developed the symptom of fearing heights.
B．he has been raised since he was very small.
C．he can’t learn how to fly higher than his owner.
D．he doesn’t want to fly among trees hunting for food.
小題4: Why does Gareth Tonen have to climb up trees every day?
A．To set an example of flying high to Troy.
B．To see how high Troy can really fly.
C．To teach Troy how to get meals in high trees.
D．To get Troy back down to cure his fear of heights.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

As children face their final month of revision before the exam season starts, many parents are looking for the words to motivate their offspring．But could they be mistakenly praising the value of ability over effort, asks Matthew Syed．
Take a glance at these expressions of encouragement:
"You learned that so quickly, you're so smart!"
"Look at that drawing．Are you -the next Picasso or what?"
They appear as the kind of confidence-boosting statements that should be given to children or, indeed, anyone else．Such phrases are used in homes and classrooms every day, particularly with exams approaching．
Intelligence-based praise leads the receiver towards the fixed thought —it suggests to them that intelligence is of primary importance rather than the effort through which intelligence can be transformed．
Let's take a quick second look into the science of expertise, and ask a question．Where does excellence come from? For a long time, it was thought the answer to this depended, to a large degree, on genetic inheritance．Or, to put it another way, it is all about talent．
It turns out that this is mistaken．Dozens of studies have found that top performers—whether in maths, mi sic or whatever—learn no faster than those who reach lower levels of achievement—hour after hour, they improve at almost the same rates．
The difference is simply that high achievers practice for more hours．Further research has shown that when students seem to possess a particular gift, it is often because they have been given extra tuition at home by their parents．
This is not to deny that some kids start out better than others—it is merely to suggest that the starting point we have in life is not particularly relevant．
Why? Because, over time, with the right, kind of practice, we change so dramatically．It is not just the body that changes, but the brain．The question of talent versus effort would not matter terribly much if it  as merely theoretical．But it is so much more than that．It influences the way we think, feel, and the way we engage with our world．
小題1:What is the best title of this passage?
A．The Words That Could Encourage Your Child
B．Intelligence Says All
C．High and Low Achievers
D．Start Early, Learn More
小題2:Which statement is intelligence-based praise?
A．"You're so brilliant - you passed that exam without really studying!"
B．"With more efforts, you can achieve more!"
C．" You combine study with entertainment so well!"
D．"You study so hard even when you are so good at it!"
小題3:The writer thinks the answer to the question of talent versus effort is _____．
A．simpleB．complicatedC．obviousD．mysterious
小題4:Why do some people have higher achievements?
A．Because they are born with great talent.
B．Because they start better than others.
C．Because they spend more of their spare time practicing what they have learnt.
D．Because they improve themselves at almost the same rates.

查看答案和解析>>

同步練習(xí)冊答案