It is easy to overlook the role that your body plays in influencing your mood(情绪)．When you are____，you may find yourself blaming work pressures or an unknown future.However，it could just be that you’ve been sitting behind your desk too long.
One way to improve your mood is____.Psychologically，it provides you with a break from the stresses in your life.Also，in the process，you may aim for____goals，like a new personal running record or a better body shape.The achievement of a particular goal makes you feel good and contributes to your____.That is why exercise has been shown to____your selfrespect.
You do not have to train yourself____to feel the psychological benefits of exercise.What really matters is____，not intensity(强度)of your exercise.You can try walking for 30 minutes five times per week or simply gardening on weekends.
A．ill B．poor C．unhappy D．unsuccessful
A．play B．communication C．sleep D．exercise
A．clear B．present C．common D．early
A．ability B．relationship C．confidence D．business
A．tear down B．build up C．set aside D．give out
A．hard B．everywhere C．carefully D．late
A．time B．length C．form D．frequency
In the past，people usually believed what newlyborn babies wanted was food and to be kept warm and dry.They thought babies were not able to ____ things until they were five or six months old.____ the researchers in the United States now believe babies begin learning on their first ____ of life.They say babies are strongly ____ by their environment and one baby will ____ if his or her mother does something that the baby likes.
A baby learns to get the best care possible by smiling to ____ her mother.This is how babies start to learn to ___ and communicate with other people.The researchers say this ability to learn ___ in a baby even before birth.They also ____ the idea that newlyborn babies can ____ and understand sounds they heard while they were still ____ inside their mothers.
Recently，an American study ____ 112 babies found babies learned better when they were ____.The babies appeared to learn well whether they were sitting up on their own，sitting in seats or __ to sit up.The researchers say keeping that kind ____ had what they called a ____ effect on the babies' ability to learn about objects.They say the body position may be linked to development in the ____．One ____ says babies can pay more attention to ___ an object if they do not have to be worried about their balance.
A．eat B．know C．remember D．learn
A．Besides B．While C．But D．Therefore
A．hour B．day C．week D．month
A．influenced B．accepted C．disturbed D．moved
A．cry B．smile C．eat D．sing
A．annoy B．love C．notice D．please
A．live B．connect C．speak D．smile
A．disappears B．informs C．exists D．happens
A．infer B．support C．deny D．instruct
A．recognize B．realize C．receive D．record
A．sleeping B．delivering C．shaping D．developing
A．helping B．raising C．involving D．containing
A．sleeping soundly B．lying down C．awaking clearly D．sitting up
A．assisted B．forced C．asked D．mentioned
A．hobby B．gesture C．decoration D．purpose
A．negative B．unmarked C．significant D．side
A．language B．feeling C．brain D．body
A．psychologist B．mother C．doctor D．researcher
A．exploring B．finding C．feeling D．discovering
A．anxious B．confident C．worried D．curious
A person should eat right，get some exercise，or he or she will look terrible in 25 years.And if the person drinks and smokes? Even____．That's the message from Blue Cross Blue Shield.The ____，called “Future You”，uses a digital camera and computer to compare a person's current image with his or her future ____ without changes in bad habits.
“Smoking can ___ your skin，” said Anna，a creative operation manager，“You can see what the results of the toxins(毒素) and the chemicals in____are.” Along with the potentially____sight of one's older self，Future You offers sciencebased____on what to eat，how much to exercise and other ways to ____ your health.But will it work? Too ____ to tell was the verdict(意见) of Anna.“I want to see some data！” she said.
Generally，Anna said，men show____concern about their appearance than women.“Women say，‘That looks like my ____on the screen，’” she said.“Men are more likely to ____，‘Yeah，go ahead.Put it on Facebook.’” The project was raised more than a year ago to improve the overall(总体的) health of the people who are ____ of this company.In addition，the growth in the ranks of ____customers would bring down the overall cost of health care.In coming weeks，two new ones will be ___ in locations such as the American Tobacco Campus and the Museum of Natural Science.If users ____，their information will be stored as secrets without names to create a database of good and bad ___．
The process is free and the response is not ____，at least according to Valencia Robertson，one of a line of people who waited to ____ the instrument on Thursday.“I'm good，” Robertson said after ____ her future image.“It's not going to be a big difference.”
A．easier B．happier C．bitter D．worse
A．instrument B．picture C．place D．structure
A．wealth B．character C．appearance D．education
A．reflect B．bother C．ruin D．affect
A．cigarette B．beers C．medicines D．foods
A．confusing B．convincing C．depressing D．exciting
A．opinion B．plans C．thought D．advice
A．break B．damage C．preserve D．change
A．possible B．natural C．early D．clear
A．deeper B．less C．higher D．stronger
A．son B．father C．daughter D．mom
A．guess B．say C．doubt D．wonder
A．customers B．managers C．secretaries D．cleaners
A．cautious B．smart C．careless D．generous
A．showing up B．thought out C．sold out D．dying out
A．know B．agree C．come D．listen
A．habits B．choices C．methods D．plans
A．nice B．cool C．strange D．bad
A．repair B．sell C．try D．buy
A．drawing B．viewing C．picturing D．imaging
We all need a healthy environment. ____, we produce waste every day and it ____ harm to our environment. Though we are young, we can still do ____ to help. In fact, even the simplest everyday activities can make a real ____ to the environment. Here are some ideas for you to live a ____ life.
Remember these three _____: reduce, reuse and recycle.
Reduce means “use less”. Don't ____ things. This saves money and reduces pollution and waste going into the environment. Before we buy something new, think if it is really ____ or maybe the ____ one will be just as good! When we do buy things, choose local products if possible, and try not to buy too many things from a ____ country.
Reuse means “use again”. Use things for ____ possible. When we buy things, make sure that they ____ a long time. We should take care of them ____ they will last, and we should ____ them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It’s better to use a china cup and a lunch box because you can use them ____.
Recycle means “change things into something else”. Although it ____ energy to change something into something else, it’s better than ____ things or burning them. Find out ____ can be recycled in your neighbourhood and take part in recycling programmes. We should also buy ____ made from recycled materials, such as recycled paper, to help save ____.
A．Therefore B．However C．Otherwise D．Besides
A．gives B．takes C．causes D．does
A．something B．everything C．nothing D．everything
A．difference B．mistake C．effect D．help
A．busy B．hard C．green D．happy
A．letters B．words C．sentences D．lessons
A．buy B．produce C．save D．waste
A．necessary B．important C．helpful D．useful
A．cheap B．expensive C．new D．old
A．rich B．developed C．foreign D．poor
A．as soon as B．as long as C．as much as D．as well as
A．use B．last C．keep D．live
A．so that B．if C．because D．though
A．sell B．lend C．throw D．repair
A．less B．more C．again D．better
A．costs B．spends C．takes D．pays
A．throwing away B．putting away C．taking away D．giving away
A．that B．which C．what D．how
A．cups B．bags C．boxes D．products
A．money B．trees C．paper D．time
If you do not use your arms or your legs for some time, they will become weak; and when you start using them again, they will slowly become strong again. knows this, but nobody would think of the fact.
Yet there are many people who to know that the memory works in the same way. When someone says that has a good memory, he means that he keeps his memory in practice exercising it very , either consciously or unconsciously. When someone else says that his memory is , he means that he does not give it enough to become strong. The position is exactly the same as that of people, one of exercises his arms and legs by playing ball, while the other in a chair or a car all day. If a friend of yours says that his arms are weak, we know that it is his own , But if he tells us that he has a poor memory, of us think that his parents are to blame, or that he is just , and few of us realize that it is just as it was his arms or legs that were weak. Not all of us can become very strong in body or very clever in mind, all of us can improve our strength and our memory by the same means that .
Have you ever that people who cannot read or write usually have memories than those who can? Why is this? Of course, because they cannot write down something in a little notebook or something else. They have to remember names, places, songs and stories; so their memory is always being exercised.
In a word, if you want to have a good memory, do practice things。
A．Everybody B．Somebody C．Nobody D．Each one
A．proving B．questioning C．describing D．indicating
A．want B．have C．seem D．need
A．she B．he C．it D．one
A．always B．nearly C．really D．almost
A．with B．in C．to D．by
A．often B．fast C．quickly D．soon
A．bad B．useless C．helpless D．poor
A．time B．chance C．space D．places
A．two B．four C．three D．five
A．them B．that C．whom D．which
A．lies B．sits C．hides D．stands
A．business B．interest C．story D．fault
A．few B．some C．many D．several
A．unfortunate B．unhappy C．unthinkable D．miserable
A．because B．but C．for D．since
A．study B．rest C．play D．work
A．noticed B．thought C．believed D．realized
A．stranger B．poorer C．worse D．better
A．remember B．remembering. C．to remember D．remembered
At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were to show that we all have “a body clock” us, which controls the and fall of our body energies, us different from one day to the next.
The of “a body clock” should not be too since the lives of most living things are controlled the 24 hour night-and-day cycle. We feel and fall asleep at night and become and energetic during the day. If the 24 hour-cycle is , most people experience unpleasant . For example, people who are not to working at night can find that of sleep causes them to badly at work.
the daily cycle of sleeping and , we also have other cycles which longer than one day. Most of us would that we feel good on some days and not so good on ; sometimes our ideas seem to flow and at other times, they do not exist.
A．anxious B．able C．careful D．proud
A．inside B．around C．between D．on
A．movement B．supply C．use D．rise
A．showing B．treating C．making D．changing
A．invention B．opinion C．story D．idea
A．difficult B．exciting C．surprising D．interesting
A．from B．by C．over D．during
A．dull B．tired C．dreamy D．peaceful
A．regular B．excited C．lively D．clear
A．disturbed B．shortened C．reset D．troubled
A．moments B．feelings C．senses D．effects
A．prevented B．allowed C．expected D．used
A．miss B．none C．lack D．need
A．perform B．show C．manage D．control
A．With B．As well as C．Except D．Rather than
A．working B．moving C．living D．waking
A．repeat B．remain C．last D．happen
A．agree B．believe C．realize D．allow
A．other B．the other C．all other D．others
A．just B．only C．still D．yet
Which came first, the chicken or the egg? This is one of life’s ______ questions and people have been debating about it for thousands of years. Now scientists believe they have solved this ______. Researchers from Sheffield and Warwick Universities in England discovered the answer ____. They used a super computer to observe the shell-making process while a new shell was ____. Then they found one protein called OC17 that is ______ for forming eggshell. This is only found inside a chicken’s body, which is proof that the ______ came first. The team was ______ looking at how animals and birds make eggshells but suddenly made their surprising ______. The big question now is where chickens came from. The ______ is from dinosaurs.
The research team said eggshells are one of nature’s most ______ creations. Professor John Harding from the team told reporters: “Understanding how chickens make eggshells is fascinating in itself, but it can also be _____ in designing new materials.” Eggshells are very lightweight but incredibly strong. Even the most up-to-date materials _____ by the world’s top engineers cannot produce anything as ______ as an eggshell. Professor Harding added that ______ eggshells could help to cure bone diseases and design materials for the construction industry. “Nature has found wonderful ways that ___ for all kinds of problems in materials science and technology — we can learn a lot from them.” he said.
A．strangest B．best C．oldest D．Closest
A．puzzle B．fact C．history D．opinion
A．on purpose B．by chance C．without hesitation D．at work
A．breaking B．changing C．disappearing D．Forming
A．necessary B．easy C．kind D．impossible
A．egg B．eggshell C．chicken D．dinosaur
A．obviously B．originally C．thoughtfully D．surprisingly
A．invention B．mistake C．statement D．discovery
A．answer B．research C．road D．egg
A．common B．ridiculous C．funny D．amazing
A．interesting B．helpful C．normal D．correct
A．bought B．cut C．designed D．carried
A．brilliant B．ordinary C．1ight D．small
A．finding B．watching C．studying D．making
A．happen B．work C．wait D．Look
Culture can affect not just language and customs, but also how people experience the world on surprisingly basic levels.
Researchers, with the help of brain scans, have ______ shocking differences in perception between Westerners and Asians, what they see when they look at a city street, for example, or even how they are _____ of a simple line in a square, according to findings published in a(n) _____ science journal.
In Western countries, culture makes people think of themselves as highly ______ entities. When looking at scenes, Westerners tend to focus more on central objects than on their surroundings. East Asian cultures, however, ________ inter-dependence, When Easterners look at a scene, they tend to focus on the surroundings as well as the object.
Using an experiment ________ two tasks, Dr. Hedden asked subjects to look at a line simply to estimate its length, a task that played to American’s _______. In another, they estimated the line’s length relative to the size of a square, an easier task for the Asian.
The level of brain activity, by ______ blood flow, was then measured by Brain Scanners. The experiment found that although there was no difference in performance, and the tasks were very easy, the levels of activity in the subjects’ brain were ______. For the Americans, areas ______ to attention were more favorable to them, when they worked on the task they tended to find more difficult --- estimating the line’s size relative to the square. The findings are a ______ of more than ten years of previous experimental research into East-West differences.
In one study, for instance researchers ______ people a choice among five pens; four red and one green. Easterners were more likely to choose a red pen, and Westerners were more likely to choose the green one.
Culture does not only make a(n) ______ on how you see the world, but how you choose to understand and internalize it. But such habits can be changed. Some psychological studies suggest that when an Easterner goes to the West or vice versa, habits of thought and perception also begin to change. Such research gives us ______ to how our brain works and holds new promises for us to develop programs to improve our memory techniques and __________ our learning skills.
A．recovered B．revealed C．rejected D．replaced
A．aware B．sensitive C．capable D．ignorant
A．essential B．complex C．leading D．inviting
A．independent B．creative C．cooperative D．responsible
A．neglect B．rely C．compliment D．emphasize
A．involving B．referring C．joining D．participating
A．respect B．favor C．surprise D．resistance
A．reducing B．adding C．tracking D．speeding
A．the same B．different C．unique D．unusual
A．objective B．associated C．opposite D．linked
A．comment B．reflection C．reaction D．respond
A．provided B．offered C．supplied D．handed
A．agreement B．effort C．impact D．affect
A．clues B．ideas C．concepts D．suggestions
A．rise B．enable C．decrease D．enhance
阅读下面短文，从短文后各题所给的四个选项（A，B，C，D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
For centuries, magicians have used various ways to shock the audience. We all have seen how a 36 performer carefully steps 37 a bed of burning coals -- barefoot. Then he walks across 38 a single burn on his feet. Is it mind over matter, or is it just physics? As it turns __39 , walking on burning coals isn’t that hot as 40 . “The coals are hot enough to 41__ you, but if you walk quickly across them you 42 being burned.” says Jonathan Hall, a physician at Penn State University in Eric Pennsylvania.
That’s because some coals are made 43 burning wood chips. Wood has two 44__ properties（特性）for fire-walking, explains Hall. First, wood is an insulator（绝缘体）--it doesn’t __45 heat very well. “It 46 _ time for heat to travel 47 the wood to your feet.” Hall says. If the performer walked across red-hot metal 48 , that would truly be 49 , because metal conducts, or transmits, heat very well. The metal would 50 burn a performer’s feet.
Second, wood has a low specific heat-- it doesn’t take much heat to 51 its temperature. Heat is a form of 52 . Temperature is a 53 of heat, in units of degrees. So 54 the coals are hot, the value（数值）of heat energy they contain is low. Thus, a well-trained performer can 55 such an amazing result.
Still, you don’t want to walk on burning coals, do you?
A．daring B．dare C．rough D．fearful
A．at B．over C．on D．above
A．with B．within C．without D．over
A．out B．on C．off D．in
A．imagine B．imagined C．imagining D．to imagine
A．fire B．burn C．light D．flame
A．prevent B．keep C．ignore D．avoid
A．off B．from C．of D．in
A．ideal B．classic C．favorite D．standard
A．transmit B．communicate C．bring D．send
A．gathers B．takes C．gains D．stands
A．through B．into C．over D．pass
A．unhappy B．unharmed C．unhealthy D．unprepared
A．charming B．magical C．tricky D．fashionable
A．instantly B．constantly C．frequently D．lately
A．produce B．raise C．construct D．create
A．power B．source C．energy D．strength
A．measure B．rank C．estimate D．rate
A．what if B．however C．as if D．even though
A．achieve B．arrive C．draw D．take
从题中所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
People often fall ill because of me. 36 , they can hardly blame me; it is largely their own 37 . A tired person may get 38 , especially when he goes to crowded places with polluted air. A sudden change in 39 is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily.
My latest victim is an energetic student. After school, he played football hard for two hours. Though 40 , he still went to the cinema .Then he got back home and took a cold shower immediately.
I seized this golden chance to 41 him .He reacted, trying to 42 me , but I was already 43 deep in his throat. He kept sneezing（打喷嚏） and his nose was running. 44 he put on some warm clothes, it didn’t work, for there were too many of us. Besides, his sore throat kept 45 him, and he developed a cough to force me and my family out, but 46 .
The next day he couldn’t go to 47 . He had lost his appetite and was not as 48 as before. His mother made him orange juice every few hours for more vitamin C, which would help his 49
For two days he was 50 by his mother. As he rested more, his defense strengthened and I began to feel the 51 . I knew I had to 52 him before long. But I am not the one who gives up easily, and I made every effort to fight back. 53 , it was my turn to feel 54 now, for his defense system was starting an all-out attack against me. I became 55 and finally my time was over.
Do you know what I am?
A．Therefore B．Besides C．However D．Then
A．business B．responsibility C．excuse D．fault
A．punished B．blamed C．caught D．killed
A．temperature B．season C．place D．condition
A．excited B．hurt C．late D．tired
A．injure B．bother C．attack D．destroy
A．get on with B．get rid of C．put up with D．take hold of
A．reproducing B．waiting C．hiding D．disappearing
A．Since B．Once C．Whether D．Although
A．reminding B．upsetting C．comforting D．Influencing
A．escaped B．succeeded C．regretted D．failed
A．bed B．work C．school D．hospital
A．peaceful B．afraid C．active D．happy
A．recovery B．development C．study D．affected
A．protected B．nursed C．scolded D．affected
A．loss B．operation C．pressure D．movement
A．leave B．catch C．forget D．beat
A．Uncertainly B．Unfairly C．Unusually D．Unfortunately
A．painful B．tired C．nervous D．ashamed
A．bigger B．weaker C．smaller D．stronger
Sea turtles have been on Earth for millions of years, but they may soon die out. The main 1 to them is people who kill them for food, according to Dr. Wallace J. Nichols of the University of California.
But the latest news may 2 turtle hunting: Dr. Nichols has found that sea turtles 3 a lot of pollution from the ocean. This pollution is unhealthy for both turtles and humans. It can cause __4__ damage to their bodies and lead to death. Research shows that many people get sick and even die from eating sea turtle meat.
In the US, most people have never eaten turtle. This is because turtles are 5 by the United States law, which makes it 6 to harm or kill these amazing animals. “But many people in other countries still eat them,” explains Nichols. “Our first 7 was to save turtles; now we must save 8 too.”
Davis said he also wants to send out a bigger 9 that we should protect the oceans. “The health of the ocean, animals in the ocean, and our own health are all 10 . A clean ocean is really good for us too because of the food we eat from there.”
A．doubt B．stream C．danger D．worry
A．accelerate B．slow C．improve D．change
A．cause B．expand C．absorb D．reduce
A．accidental B．occasional C．unknown D．serious
A．qualified B．protected C．restricted D．produced
A．impossible B．difficult C．illegal D．abnormal
A．goal B．impression C．difficulty D．cost
A．Earth B．ocean C．people D．animals
A．advertisement B．message C．sign D．problem
A．concerned B．disturbed C．developed D．connected
Almost everyone wants to get smarter. We struggle to improve our 36_ , intelligence and attention. We drink cup after cup of coffee to help us 37_ the day.
38 __, a new study published in Current Directions in Psychological Science warns that there are 39___ to how smart humans can get.
Each of our body parts develops in a certain way for a reason. 40 _, we are not 3 meters tall 41 _ most people’s hearts are not strong enough to send 42 _ up that high. Scientists say that our thinking ability works in the same way. A baby’s brain size is limited by a series of __43 , such as the size of the mother’s pelvis (骨盆). If our brains developed to be bigger, there could be more 44 during childbirth.
The study of Jews, who have an average IQ much _ 45_ than other Europeans, showed they were more _46_ to develop diseases of the _47_ system. This might be because of their increased brainpower.
If intelligence cannot be improved, can we at least get better at _ 48 _ ? Not really, say scientists. They studied _49_ like caffeine (咖啡因)that improve attention. They found the drugs only helped people with serious 50 _ problems. For those who did not have trouble paying attention, the drugs could have the 51 _ effect. Scientists say that this suggests there is a(n) 52 limit to how much people can or should concentrate.
Our memory is also a “double-edged sword”. People with extremely good memories could 53__ having a difficult life because they cannot _54 bad things that happen to them.
Thomas Hills, one of the authors of the paper, said that 55 all the problems in trying to get smarter, it’s unlikely that there will ever be a “super mind”.
A．ability B．character C．memory D．emotion
A．go through B．put through C．get through D．carry through
A．Though B．Therefore C．However D．Meanwhile
A．standards B．measures C．ranges D．limits
A．At first B．In addition C．For example D．Above all
A．until B．because C．before D．so that
A．blood B．information C．breath D．strength
A．factors B．reasons C．aspects D．effects
A．chances B．deaths C．choices D．lives
A．smarter B．better C．lower D．higher
A．likely B．possible C．probable D．sure
A．physical B．bodily C．personal D．nervous
A．exercising B．concentrating C．memorizing D．thinking
A．poisons B．drinks C．plants D．drugs
A．attention B．family C．health D．living
A．same B．opposite C．different D．similar
A．lower B．smaller C．upper D．higher
A．end up B．make up C．start up D．come up
A．forget B．remember C．perform D．share
A．supposing B．concerning C．considering D．regarding
Water and its importance to human life were the centre of the world’s attention last week. March 22 was World Water Day and 36 the theme “Water for Life”.
There are more than one billion people in the world who live without 37 drinking water. The United Nations 38 to cut this number in half by 2015.
Solving such a big problem seems like a(n) 39 challenge. But everyone, 40 teenagers, can do something to help. A teenage girl in the US has set an example to the 41 of her age around the world.
Rene Haggerty, 13, was awarded the 2004 Gloria Barron Prize for her work— 42 discarded(废弃的) batteries（电池）which pollute water.
In 2003, Haggerty went on a field trip to the Great Lakes Science Centre in Ohio. There she saw an exhibit about how 43 in old batteries harm the water of Lake Erie.
Haggerty learnt that 44 the batteries was an easy solution. “I think everybody can do it, because everyone 45 batteries, and it can make a big difference.” With these words, she began to 46 awareness in her area.
She 47 her county government and school board. She got permission to start a recycling programme in schools 48 the public library, hospital, and churches. With help from her family, friends and local waste-management 49 , she gathered containers, arranged transportation, and made a(n) 50 video.
Over the past two years, she collected four tons of batteries and drew the attention of officials, who were in charge of a battery recycling programme but had made 51 progress.
When asked 52 she feels like a hero, Haggerty is quite ____53 . “Not really. Well, maybe for the fish I saved!”
Every year the Gloria Barron Prize 54 young Americans aged 8 to 18 who have shown leadership and courage in 55 the public and the planet. Each year ten winners receive US $ 2,000 each, to help with their education costs or their public service work.
A．had B．gave C．wrote D．discussed
A．enough B．safe C．much D．polluted
A．asks B．orders C．hopes D．ensures
A．good B．strong C．important D．unreal
A．especially B．sometimes C．even D．seldom
A．boys B．others C．students D．grown-ups
A．collecting B．selling C．buying D．using
A．things B．chemicals C．water D．air
A．making B．recycling C．reducing D．handling
A．uses B．has C．throws D．needs
A．tell B．increase C．spread D．inform
A．talked to B．listened to C．heard from D．thought about
A．and B．beside C．as well as D．as good as
A．officials B．workers C．clerks D．experts
A．industrial B．agricultural C．scientific D．educational
A．much B．no C．some D．little
A．if B．how C．when D．why
A．proud B．glad C．modest D．worried
A．praises B．helps C．supports D．honors
A．awarding B．saving C．serving D．favoring
People do not analyse every problem they meet. Sometimes they try to remember a solution from the last time they had a 36 problem. They often accept the opinion or ideas of other people. Other times they begin to act without 37 ; they try to find a solution by trial and error. However, when all of these methods 38 , the person with a problem has to start analysing. There are six 39 in analysing a problem.
40 , the person must recognize that there is a problem. For example, Sam’s bicycle is broken, and he cannot ride it to class as he usually does. Sam must 41 that there is a problem with his bicycle.
Next the person must 42 the problem. Before Sam can repair his bicycle, he must know why it does not work. For example, he must 43 the parts that are wrong.
Now the person must look for 44 that will make the problem clearer and lead to 45 solutions. For example, suppose Sam 46 that his bike does not work because there is something wrong with the brakes. 47 , he can look in his bicycle repair book and read about brakes, talk to his friends at the bike shop, or look at his brakes carefully.
After 48 the problem, the person should have several suggestions for a possible solution. Take Sam as an example 49, his suggestions might be: tighten or loosen the brakes; buy new brakes and change the old ones.
In the end, one 50 seems to be the solution to the problem. Sometimes the 51 idea comes quite 52 because the thinker suddenly sees something in a 53 way. Sam, for example, suddenly sees there is a piece of chewing gum stuck to a brake. He immediately hits on the solution to his problem: he must 54 the brake.
Finally the solution is 55 . Sam does it and finds his bicycle works perfectly. In short he has solved the problem.
A．serious B．usual C．similar D．common
A．practice B．thinking C．understanding D．help
A．fail B．work C．change D．develop
A．ways B．conditions C．stages D．orders
A．First B．Usually C．In general D．Most importantly
A．explain B．prove C．show D．see
A．judge B．find C．describe D．face
A．check B．determine C．correct D．recover
A．answers B．skills C．explanation D．information
A．possible B．exact C．real D．special
A．hopes B．argues C．decides D．suggests
A．In other words B．Once in a while C．First of all D．At this time
A．discussing B．settling down C．comparing with D．studying
A．secondly B．again C．also D．alone
A．suggestion B．conclusion C．decision D．discovery
A．next B．clear C．final D．new
A．unexpectedly B．late C．clearly D．often
A．simple B．different C．quick D．sudden
A．clean B．separate C．loosen D．remove
A．recorded B．completed C．tested D．accepted
Adults are often surprised by how well they remember something they learned as children but have never practised in the meantime. A man who has not had an opportunity to go swimming for years can 1 swim as well as ever when he gets back in the water. He can get on a bicycle after several decades and still 2 away. A mother who has not 3 the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or recite the story of Cinderella or Snow White.
One explanation is the law of over learning, which can be stated as following: 4 we have learned something, additional learning increases the 5 of time we will remember it.
In childhood, we usually continue to practise such skills as swimming, bicycle riding long after we have learned them. We continue to listen to and 6 ourselves of poems such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella or Snow White. We not only learn but __7 .
The law of over learning explains why cramming (突击学习) for an examination, 8 it may result in a passing grade, is not a 9 way to learn a school course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little over learning, 10 , is usually a good investment toward the future.
A．only B．still C．hardly D．even
A．move B．ride C．travel D．drive
A．showed up B．cared for C．thought about D．brought up
A．Once B．Before C．Until D．Unless
A．warm B．inform C．remind D．recall
A．recite B．research C．overlearn D．improve
A．so B．though C．if D．after
A．satisfactory B．demanding C．convenient D．swift
A．at most B．on the other hand C．by the way D．in the end
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