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Thewintervacation,onemorningIaccidentallyturnover"sciencetextbooks],justbegan,Istillfeelinthetextbookthethingsisveryboring,boring.WhenIwanttocloseyourbooks,when,suddenly,thebookasmallexperimentattractedme,thebooksaysblackcanabsorbsunlight,andwhitecanreflexsunshine.Reallybelikethis?Outofcuriosity,Idecidedtodotheexperiment,lookattheresultsandwhetherthebook.Justdoit,Ipreparedapieceofwhiteclothandapieceofcloth,thentooktwocups,cupfilledupwithcoldwater.Next,Iputtheclothandwhiteclothbytworespectivelyglassontop,andthenputtheminthesunwasshiningplace,acceptthesunradiation.Iwaitforthebighalf?
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