专题13 加强用眼卫生 预防近视发生-备战2023年中考英语阅读理解时文爆点专题训练（原卷版）.docxVIP

专题13加强用眼卫生预防近视发生

备战2022-2023年中考英语阅读理解时文爆点专题训练

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（2022·重庆綦江·校联考模拟预测）

Therearealwayslotsofstrangestoriesaboutprotectingyoureyes.Forexample,youmighthavebeentoldthatyou’dgoblindfromreadinginthedark,butyoucouldmakeupforitbyeatingcarrots.

Thisisjustoneofthewrongideasyoumayhaveheardof.Belowteenshaspickedoutscientificexplanationsforthreemistakesthepeopleoftenmakeabouteyes.Let’stakealook.

Caneatingcarrotsimproveyoureyesight???

CarrotsarerichinVitaminA,whichisimportantandnecessaryforyoureyes’generalhealth.VitaminAhelpseyestomakelightintosignals,allowingpeopletoseeinlowlightconditions.However,eatingmorecarrotsdoesn’thelpyouseebetter.Somecarrotswillhelp,butalargenumberofcarrotswillnotgiveyousuperhumanvisionorallowyoutogetridofyourglasses.

Ifyourparentshavebadeyesight,willyouhavebadeyesight,too???

Myopia（近视）canbepassedfromparentstochildren.AstudybytheAmericansOptometricAssociationfoundthatifbothparentsaremyopia,thereisa33to60percentchancethatthechildis.Forchildrenwhohaveoneparentwithmyopia,thechanceis23to40percent,andit’sdownto6to15percentforkidswithnon-myopiaparents.Sonomatterhowbadyourparents’eyesightis________

Isittruethatpeoplewhoarecolorblindcan’tseecolors???

Colorblindnessdoesn’tmeanthatsomeonecan’tseecolorsatall,likeablackandwhitemovie.Itmeansthatsomeonehasdifficultytellingsomecolorsapart,usuallygreenandredorblueandyellow.Colorblindnessisusuallyaconditioncausedbynothavingcolorcells（细胞）.Ifthecellsdon’trespond（反应）intherightwaytodifferencesinwavelengthsoffight,colorblindnesshappens.Therearedifferentlevelsofcolorblindness.Somepeoplecannottellthedifferencebetweencolorsindim（昏暗的）light,whileothershavedifficultyinanylight.Inthemostseriousformofcolorblin