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1、2019中考英语选练（8）（阅读理解）AWhenwecanseewell,wedon’tthinkaboutoureyesveryoften.Itisonlywhenwecannotseeperfectlythatwecometoseehowimportantoureyesare.Peoplewhoarenearsightedcanonlyseethingsthatareveryclosetotheireyes.Manypeoplewhodoalotofclosework,suchaswriting,readingandsewing,becomenearsighted.Thenth
2、eyhavetowearglassesinordertoseedistantthingsclearly.Peoplewhoarefarsightedsufferfromjusttheoppositeproblem.Theycanseethingsthatarefaraway,buttheyhavedifficultyreadingabookunlesstheyholditatarm’slength.Iftheywanttodomuchreading,theymustgetglasses,too.Otherpeopledonotseeclearlybecausetheireyesar
3、enotexactlytherightshape.This,too,canbecorrectedbyglasses.Somepeople’seyesbecomecloudybecauseofcataracts（白内障）.Longagothesepeopleoftenbecameblind.Now,however,itispossibletooperateonthecataractsandremovethem.Whennightfalls,coluresbecomefaintertotheeyesandfinallydisappear.Afteryoureyeshavegrownus
4、edtothedark,youcanseebetterifyouusethesidesofyoureyesratherthanthecenters.Sometimes,afterdark,youcanseeasmallthingtoonesideofyou,whichseemstodisappearifyouturnyourheadinitsdirection.Thisisbecausewhenyouturnyourhead,youarelookingatthethingtoodirectly.Menonguarddutysometimesthinktheyseesomething
5、movingtoonesideofthem.Whentheyturntolookstraightatit,theycan’tseeitanymore,andtheybelievetheyweremistaken.However,thismistakehappensbecausethecenteroftheeye,whichisverysensitiveindaylight,isnotassensitiveasthesidesoftheeyeafterdark.1.Wedon’tknowthatoureyesareofgreatimportanceuntil___.A.wethink
6、aboutoureyesB.wecannotseeclearlyC.wewearglassesD.wehavetodomuchreading2.Accordingtothepassage,a_________ismorelikelytobenearsightedthantheaverageperson.A.tailorB.doctorC.guardD.driver3.Thosewhosufferfromcataracts_________.A.willbecomeblindB.can’tbecuredC.maybecuredD.mustmovetootherplaces4.Peop
7、lewhoarefarsighted_________.A.cannotdoalotofcloseworkwithoutglassesB.canonlyseethingsthatareveryclosetotheireyesC.havedifficultyreadingabookiftheyholditatarm’slengthD.havethesameproblemasthenearsightedpeople5.Toseeasmallthingatnight,iti
