15.It's puzzling,isn't it?No matter where you try to tickle  (使人發(fā)癢)  yourself,even on the soles  (腳底)  of your feet or under your arms,you just can't.
To understand why,you need to know more about how your brain works.One of its main tasks is to try to make good guesses about what's going to happen next.While you're busy getting on with your life,walking downstairs or eating your breakfast,parts of your brain are always trying to predict the future.
Remember when you first learned how to ride a bicycle?At first,it took a lot of concentration to keep the handlebars steady and push the pedals (踏板).But after a while,cycling became easy.Now you're not aware of the movements you make to keep the bike going.From experience,your brain knows exactly what to expect,so your body rides the bike automatically.Your brain is predicting all the movements you need to make.
You only have to think consciously about cycling if something changes---like if there's a strong wind or you get a flat tyre.When something unexpected happens like this,your brain is forced to change its predictions about what will happen next.If it does its job well,you'll adjust to the strong wind,leaning your body so you don't fall.
Why is it so important for our brains to predict what will happen next?It helps us make fewer mistakes and can even save our lives.For example,when a chief fireman sees a fire,he immediately makes decisions about how best to position his men.His past experiences help him foresee what might happen and choose the best plan for fighting the fire.His brain can instantly predict how different plans would work out,and he can rule out any bad or dangerous plans without putting his men at risk in real life.
So how does all this answer your question about tickling,kids?Because your brain is  always predicting your own actions,and how your body will feel,as a result,you cannot tickle yourself.Other people can tickle you because they can surprise you.You can't predict what their tickling actions will be.

32.We can infer from Paragraph 4thatC.
A.it's nothing serious to get a flat tyre.
B.weather changes can be predicted by brain.
C.prediction can be changeable and adaptable.
D.it's dangerous to cycle in the strong wind.
33.The phrase"rule out"in Paragraph 5probably means"D".
A.make rules of
B.think about
C.carry on 
D.get rid of
34.What is the best title for this passage?B
A.The Secret of Cycling.
B.Why Can't I Tickle Myself?
C.How Does the Brain work?
D.The Importance of Prediction
35.The passage is probably taken fromA.
A.a(chǎn) science book for children
B.a(chǎn) guidebook for passengers
C.a(chǎn) scientific report for experts
D.a(chǎn) research paper for doctors.

分析 本文主要講述了大腦的工作原理,而且人們的大腦可以預(yù)測你的行為.

解答 32.C考查細(xì)節(jié)理解.由倒數(shù)第二段When something unexpected happens like this,your brain is forced to change its predictions about what will happen next.If it does its job well,you'll adjust to the strong wind,leaning your body so you don't fall可知,我們大腦的預(yù)測可以隨著突發(fā)情況的發(fā)生而發(fā)生轉(zhuǎn)變,并且會適應(yīng)所發(fā)生的突發(fā)情況,故C正確.
33.D 考查詞義猜測.由語境His brain can instantly predict how different plans would work out,and he can rule outany bad or dangerous plans without putting his men at risk in real life可知,消防員總指揮的大腦持續(xù)不斷的預(yù)測不同的計(jì)劃可能產(chǎn)生的結(jié)果,并且他可以把那些不好或者危險的計(jì)劃排除掉,從而使他的手下不會身陷危險.故D合適.
34.B 考查標(biāo)題歸納.本文主要介紹了我們不能使自己發(fā)癢的原因.故B選項(xiàng)最好.并且B選項(xiàng)以設(shè)問的方式更能吸引讀者注意.
35.A 考查文章出處.文章主要講述我們不能使自己發(fā)癢這個科學(xué)現(xiàn)象,并且由最后一段中的So how does all this answer your question about tickling,kids?可知,A最合適.

點(diǎn)評 本文是科教類閱讀理解.做這類題材閱讀理解時要求考生對文章通讀一遍,做題時結(jié)合原文和題目有針對性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據(jù).

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:信息匹配

5.Recently some American scientists have given a useful piece of advice t o people in industrialized nations.They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago(36)CThe scientists say that the human life has changed greatly.Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses.(37)ESo they are called"diseases of civilization".Many cancers and diseases of the blood system are examples of such diseases.
    Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco,probably none.(38)DHowever,a change in food is one of the main differences between life in ancient times and that of today.
    Stone Age people hunted wild animals for their meat,which had much less fat than domestic ones.They ate a lot of fresh wild vegetables and fruits.They did not have milk or any other dairy products,and they made very little use of grains.(39)BWe eat six times more salt than our ancestors.We eat more sugar.We eat twice as much fat but only one third as much protein and much less vitamin C.(40)F But scientists say that we would be much healthier if we eat much the same way the ancient people did,cutting the amount of fatty,salty and sweet food.

A.Stone Age people lived a simple life.
B.But today,we enjoy eating a lot of these.
C.In that case,they would live much healthier.
D.Ancient people also got lots of physical exercise.
E.These new sicknesses were not known in ancient times.
F.People today probably don't want to live like our ancestors.
G.Modern people used to suffer from"diseases of civilization".

查看答案和解析>>

科目:高中英語 來源: 題型:信息匹配

6.Lots of people give you advice on overcoming fear(恐懼).(16)GHowever,I want to tell you that a world without fear would be more dangerous,less rewarding.So we want to treat fear as a friend?Here are three reasons.
(17)AThink about it.Do you get more nervous when you meet the girl (or guy) of your dreams?Which is more fearful,talking to the boss of your company or to some of your friends?(18)EIf you didn't have fear to guide you,you might not know that!Not so bad,right?
Next,fear encourages us to take action.Fear is a call to action.In the past,our ancestors  didn't run away in fear when they saw a tiger running toward them but tried to kill it for food.Now,most of us don't face serious danger like hungry tigers every day,but we do face serious bosses or public speaking.So,what can we do?(19)DLastly,fear lets you know you are alive.Why do we like roller coasters?(20)BSame for horror movies.
So fear can guide you towards what's important for you and encourage you to take action to improve.Don't we all need that kind of friend?

A.The first is that fear is an excellent guide to opportunity.
B.They frighten us in a mostly safe way.
C.Imagine what life would be like without fear.
D.Let fear provide us with the energy to do what needs to be done.
E.Fear is showing you what is important and what matters to you.
F.Don't fear to be wrong.
G.They say if you can overcome fear,you will be successful.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

3.Do you want to get home from work knowing you have made a rela difference in someone's life?If yes,don't care about sex or age!Come and join us,then you'll make it!
Position:Volunteer Social Care Assistant (No Pay with Free Meals)
Place:Manchester
Hours:Part Time
We are now looking for volunteers to support people with learning disabilities to live active lives!Only 4days left.Don't miss the chance of lending your warm hands to help others!
Role:
You will provide people with learning disabilities with all aspects of their daily lives.You will help them to develop new skills.You will help them to protect their rights and their safety.But your primary concern is to let them know they are valued.
Skills and Experience Required:
You will have the right values and great listening skills.You will be honest and patient.You will have the ability to drive a car and to communicate in fluent written and spoken English since you'll have to help those people with different learning disabilities.Previous care-related experience will be a great advantage for you.

33.The purpose of the text is toD.
A.leave a note           
B.send an invitation
C.present a document          
D.carry an advertisement
34.What does the underlined part in Paragraph 1mean?A
A.You'll make others'lives more meaningful with this job.
B.You'll arrive home just in time from this job.
C.You'll earn a good salary from this job.
D.You'll succeed in getting this job.
35.The volunteers'primary responsibility is to help people with learning disabilitiesD.
A.to get some financial support   
B.to properly protect themselves
C.to learn some new living skills  
D.to realize their own importance.

查看答案和解析>>

科目:高中英語 來源: 題型:完形填空

10.You may have heard of the man who decided to repair the roof of his house.To be(41)B,he tied a rope around his waist.He called his son and asked him to tie it to something(42)A.The boy fastened the safety rope to the bumper(保險杠) of their car parked in the drive way.
But a little while later,his wife needed to(43)D a few purchases with the automobile.(44)C of the line securing her husband,she started the car and drove away.The rope(45)A tightened and threw the man over the roof and into the air.
This story,factual or not,points to a great(46)C.It is the truth about where we(47)B our security; about those things to which we've(48)C our safety lines.
In her book LESSONS IN LIVING,writer Susan Taylor tells of lying in bed in the early(49)Aof the morning when an earthquake struck.As her house(50)D,she tumbled out of bed and(51)C to stand underneath an arched door-way in her hall,watching in(52)B as her whole house tumbled down around her.
Susan huddled,scared and (53)A,in the darkness.In the pre-dawn morning she cried and called out for help.As(54)D set in,she thought that maybe she should be listening for(55)B rather than making so much commotion(激動).So she grew still and listened.In the stillness,(56)C abandoned her and a feeling of indescribable peace and happiness flooded in.It was an experience that was to permanently(57)D her life.
She later wrote,"Before the quake I had all the trappings of success,but my life was out of(58)A.I wasn't happy because I was clinging to things in my life and always wanting more.It took an earthquake and(59)B everything I owned for me to discover that my security had been with me along…There's a power within us that we can(60)D no matter what is happening around us.
41.A.tightB.safeC.comfortableD.quick
42.A.secureB.thickC.closeD.strong
43.A.helpB.handleC.runD.make
44.A.RealisticB.FondC.UnawareD.Anxious
45.A.immediatelyB.a(chǎn)ctuallyC.graduallyD.quietly
46.A.extentB.conclusionC.truthD.problem
47.A.getB.placeC.keepD.realize
48.A.brokenB.graspedC.tiedD.found
49.A.hoursB.stagesC.periodsD.light
50.A.movedB.fellC.crackedD.shook
51.A.failedB.continuedC.managedD.a(chǎn)ttempted
52.A.surpriseB.horrorC.excitementD.a(chǎn)nger
53.A.cryingB.prayingC.complainingD.whispering
54.A.disappointingB.hopelessnessC.nervousnessD.exhaustion
55.A.operatorsB.rescuersC.researchersD.volunteers
56.A.puzzleB.strengthC.fearD.confidence
57.A.destroyB.improveC.controlD.change
58.A.balanceB.lineC.courseD.sense
59.A.desertingB.losingC.spoilingD.missing
60.A.insist onB.turn toC.take overD.depend upon

查看答案和解析>>

科目:高中英語 來源: 題型:填空題

20.Elephants in Uganda are starting to come close to villages near national parks.Sometimes,the big animals harm or even kill villagers.(36)ASo,the Uganda Wildlife Authority has been giving people new tools to keep the elephants away:vuvuzelas,which became very popular in the South Africa World Cup.They are plastic instruments some fans use at sports events to cheer for their teams.
(37)CWhen the elephants hear the unpleasant sound,they leave,and no one is harmed.
An official for the Uganda Wildlife Authority says vuvuzelas work because they do not threaten the elephants.That is important because an elephant that feels threatened is more likely to attack.So far,no one has reported an elephant attacking in answer to a vuvuzela.
(38)GThey have built beehives-houses for flying insects that sting(叮咬).They have hung ropes covered in spicy (辛辣的) oil.They have dug long,deep holes.And they have used guns,called A-K47s.(39)D But over time,the elephants have stopped being afraid of the sound of the gun.They only look at the shooter and wave their ears.
Another official for the Uganda Wildlife Authority,Gessa Simblicious,says one elephant-prevention solution will not work everywhere in Uganda.And one day,elephants may get used to the vuvuzela noise,just as they do the sound of the A-K47.(40)F
  A.They are a real danger to people.
  B.The big animals are friendly to the local people.
  C.The instruments make a loud sound elephants do not like.
  D.People shoot the gun in the air to scare the elephant away.
  E.The elephants are cruelly killed in large numbers in Africa.
  F.But right now,vuvuzelas are an effective way to deal with a serious problem.
  G.Villagers have tried other ways to stop elephants from coming near farms and houses.

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

7.Regular public broadcasting followed shortly afterwards,first ________ on 11May 1928 in New York and on 20August 1929in London.(  )
A.beganB.to beginC.beginningD.begun

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

4._____ him and then try to copy what he does.( 。
A.MindB.Glance atC.Stare atD.Watch

查看答案和解析>>

同步練習(xí)冊答案