英语六级阅读冲刺训练.pdf
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1、Y ou sta re a t wa te rf a ll f or a minute or two,a nd th e n sh if t your g a ze to itssurrounding s.W h a t you now se e a ppe a rs to drif t upwa rd.Th e se optic a l illusions oc c ur b e c a use th e b ra in is c onsta ntly ma tc h ing its mode lof re a lity to sig na ls f rom th e b ody*s se
2、nsors a nd inte rpre ting wh a t must b e h a ppe ningth a t your b ra in must h a ve move d,not th e oth e r;th a t downwa rd motions is now norma l,so a c h a ng e f rom it must now b e pe rc e ive d a s upwa rd motion.Th e se nsors th a t ma ke th is ma g ic a re of two kinds.Ea c h e ye c onta i
3、ns a b out 120mill ion rods,wh ic h provide some wh a t b lurry b la c k a nd wh ite vision.Th e se a re th ewindows of nig h t vision;onc e a da pte d to th e da rk,th e y c a n de te c t a c a ndle b urningte n mile s a wa y.Color vision in e a c h e ye c ome s f rom six to se ve n million struc t
4、ure s c a lle d c one s.U nde r ide a l c onditions,e ve ry c one c a n“se e th e e ntire ra inb ow spe c trum of visib lec olors,b ut one type of c one is most se nsitive to re d,a noth e r to g re e n,a th irdto b lue.Rods a nd c one s se nd th e ir me ssa g e s pulsing a n a ve ra g e 20 to 25 ti
5、me s pe r se c onda long th e optic ne rve.W e se e a n ima g e f or a f ra c tion of a se c ond long e r th a n ita c tua lly a ppe a rs.I n movie s,re e ls of sti 11 ph otog ra ph s a re proje c te d onto sc re e nsa t 24 f ra me s pe r se c ond,tric king our e ye s into se e ing a c ontinuous mov
6、ing pic ture.L ike a ppa re nt motion,c olor vision is a lso sub je c t to unusua l e f f e c ts.W h e nda y g ive s wa y to nig h t,twilig h t b ring s wh a t th e poe t T.S.Eliot c a lle d“th e viole th our.A lig h t le ve ls f a l1,th e rods b e c ome prog re ssive ly le ss re sponsive.Rodsa re m
7、ost se nsitive to th e sh orte r wa ve le ng th s of b lue a nd g re e n,a nd th e y impa rta stra ng e vividne ss to th e g a rde ny s b lue f lowe rs.Howe ve r,look a t a wh ite sh irt during th e re ddish lig h t of sunse t,a nd you11 still se e it in its“true c olor一wh ite,not re d.Our e ye s a
8、re c onsta ntlyc ompa ring a n ob je c t a g a inst its surrounding s.Th e y th e re f ore ob se rve th e e f f e c t ofa sh if t in th e c olor of illumina ting on b oth,a nd a djust a c c ording ly.Th e e ye s c a n disting uish se ve ra l million g ra dua tions of lig h t a nd sh a de of c olor.E
9、a c h wa king se c ond th e y f la sh te ns of millions of pie c e s of inf orma tion to th e b ra in,wh ic h we a ve s th e m inc e ssa ntly into a pic ture of th e world a round us.Y e t a l 1 th is is done a t th e b a c k of e a c h e ye b y a f a b ric of se nsors,c a lle dth e re tina,a b out
10、a s wide a nd a s th ic k a s a posta g e sta mp.A s th e Re na issa nc e inve ntora nd a rtist L e ona rdo da V inc i wrote in wonde r,“W h o would b e lie ve th a t so sma ll aspa c e c ould c onta in th e ima g e s of a ll th e unive rse?”1.V isua l illusions of te n ta ke pla c e wh e n th e ima
11、 g e of re a lity i s _ _ _.A.ma tc h e d to six to se ve n million struc ture s c a lle d c one s.B.c onf use d in th e b ody s se nsors of b oth rods a nd c one s.C.inte rpre te d in th e b ra in a s wh a t must b e th e c a se.D.sig na le d b y a b out 120 million rods in th e e ye.2.Th e visua l
12、 se nsor th a t is c a pa b le of disting uish ing sh a de s of c olor is c a lle dA.c one sB.c olor visionC.rodsD.spe c trum3.Th e re tina se nd pulse s to th e b ra in _ _.A.in sh ort wa ve le ng th sB.a s c olor pic ture sC.b y a g a ng lion c e llD.a long th e optic ne rve.4.Twe nty-f our still
13、ph otog ra ph s a re ma de into a c ontinuous moving pic ture justb e c a use _ _ _.A.th e ima g e we se e usua lly sta ys long e r th a n it a c tua lly a ppe a rs.B.we se e a n ob je c t in c ompa rison with its surrounding s.C.th e e ye s c a tc h million pie c e s of inf orma tion c ontinuously.
14、D.rods a nd c one s se nd me ssa g e s 20 to 25 time s a se c ond.5.Th e a uth orJ s purpose in writing th e pa ssa g e lie s in _.A.sh owing th a t we some time s a re de c e ive d b y our own e ye s.B.inf orming us a b out th e dif f e re nt f unc tions of th e e ye org a ns.C.re g re tting th a t
15、 we a re too slow in th e study of e ye s.I),ma rve ling a t th e g re a t work done b y th e re tina.答案:CA DA BI t b e ing not only possib le b ut e ve n e a sy to pre dic t wh ic h te n-ye a r-old b oysa re a t g re a te st risk of g rowing up to b e pe rsiste nt of f e nde rs,wh a t a re we doing
16、with th e inf orma tion?J ust a b out th e la st th ing th a t we sh ould do is to wa it untilth e ir troub le s h a ve e sc a la te d in a dole sc e nc e a nd th e n a tta c k th e m with th e provisionsof th e ne w Crimina l J ustic e Bill.I f th is b ill b e c ome s la w,ma g istra te s will h a
17、ve th e powe r to impose re side ntia lc a re orde rs.M ore young pe ople will b e dra wn into institutiona l lif e wh e n a ll th ee vide nc e sh ows th a t th is worse ns ra th e r th a n improve s th e ir prospe c ts.Th eintroduc tion of sh ort sh a rp sh oc ks in de te ntion c e nte rs will simp
18、ly g ive more youngpe ople a ta ste of some th ing e lse th e y don t ne e d;th e wh ole re g ime of de te ntionc e nte rs is one of toug h e ning de linque nts,a nd if you wa nt to tra in some one to b ea nti-e sta b lish me nt,I c a n t th ink of a b e tte r wa y to do it,“sa ys th e write rof th
19、is re port.Th e Ca mb ridg e I nstitute of Criminolog y c ome s up with f ive ke y f a c tors th a t a relike ly to ma ke f or de linque nc y:a low inc ome f a mily a la rg e f a mily,pa re nts de e me db y soc ia l worke rs to b e b a d a t ra ising c h ildre n,pa re nts wh o th e mse lve s h a ve
20、ac rimina l re c ord,a nd low inte llig e nc e in th e c h ild.N ot surprising ly,th e f a c torste nd to ove rla p.Of th e 63 b oys in th e sa mple wh o h a d a t le a st th re e of th e m wh e nth e y we re te n,h a lf b e c a me juve nile de linque ntsc ompa re d with only a f if th of th esa mpl
21、e a s a wh ole.Th re e more f a c tors ma ke th e pre dic tion more a c c ura te:b e ing judg e d troub le someb y te a c h e rs a t th e a g e of te n,h a ving a f a th e r with a t le a st two c rimina l c onvic tionsa nd h a ving a noth e r me mb e r of th e f a mily with a c rimina l re c ord.Of
22、 th e 3 5 me n wh oh a d a t le a st two of th e se f a c tors in th e ir b a c kg round 18 b e c a me pe rsiste ntde linque nts a nd 8 more we re in troub le with th e la w.A mong th ose ke y f a c tors,f a r a nd a wa y th e most importa nt wa s h a ving a pa re ntwith a c rimina l re c ord,e ve n
23、 if th a t h a d b e e n a c quire d in th e dista nt pa st,e ve nth oug h ve ry f e w pa re nts did oth e r th a n c onde mn de linque nt b e h a vior in th e ir c h ildre n.Th e role of th e sc h ools e me rg e s a s e xtre me ly importa nt.Th e most re lia b lepre dic tion of a l 1 on th e f utur
24、e s of b oys c a me f rom te a c h e rs*ra ting s of h owtroub le some th e y we re a t th e a g e of te n.I f th e inf orma tion is th e re in th e c la ssroomth e re must b e a re sponse th a t b ring s more a tte ntion to th ose troub le some c h ildre n:a se a rc h f or th ing s to g ive th e m
25、c re dit f or oth e r th a n a c a de mic a c h ie ve me nt,a re f usa lto a llow th e m to g o on pla ying trua nt,a nd a f oste ring of a mb ition a nd opportunitywh ic h sh ould sta rt e a rly in th e ir sc h ool c a re e rs.1.A c c ording to th e a uth or,de linque nc y sh ould b e ta c kle d _
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