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(cè)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(cè)可以隨著突發(fā)情況的發(fā)生而發(fā)生轉(zhuǎn)變,并且會(huì)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(cè).由語(yǔ)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(cè)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(xiǎn)的計(jì)劃排除掉,從而使他的手下不會(huì)身陷危險(xiǎn).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(wèn)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(gè)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(píng) 本文是科教類(lèi)閱讀理解.做這類(lèi)題材閱讀理解時(shí)要求考生對(duì)文章通讀一遍,做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語(yǔ)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(cè),一定要做到有理有據(jù).

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