更新时间：2018-07-29 16:02作者：才子老师
62．A细节理解题。文中方框的内容很明显是来自医生和顾客的推荐(recommend)，故选A。
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C
LifeintheClear
Transparentanimalsletlightpassthroughtheirbodiesthesamewaylightpassesthroughawindow.Theseanimalstypicallylivebetweenthesurfaceoftheoceanandadepthofabout3,300feet—asfarasmostlightcanreach.Mostofthemareextremelydelicateandcanbedamagedbyasimpletouch.SonkeJohnsen,ascientistinbiology,says,“Theseanimalslivethroughtheirlifealone.Theynevertouchanythingunlessthey’reeatingit,orunlesssomethingiseatingthem.”
Andtheyareasclearasglass.Howdoesananimalbecomesee-through?It’strickierthanyoumightthink.
Theobjectsaroundyouarevisiblebecausetheyinteractwithlight.Lighttypicallytravelsinastraightline.Butsomematerialsslowandscatter(散射)light,bouncingitawayfromitsoriginalpath.Othersabsorblight,stoppingitdeadinitstracks.Bothscatteringandabsorptionmakeanobjectlookdifferentfromotherobjectsaroundit,soyoucanseeiteasily.
Butatransparentobjectdoesn’tabsorborscatterlight,atleastnotverymuch,Lightcanpassthroughitwithoutbendingorstopping.Thatmeansatrans