- 問題詳情: Whenmyson,Justin,wasfour,hefoundacaterpillar(毛毛蟲)andputitinajar.Eachdayhefeditwithfreshgrassandleaves.Inafewweeksthecaterpillarwasfatandreadytosleep.Onemorningwediscoveredthecaterpillarwrappedinacocoon(繭).Ithungfromthetopofthejar,anexam...
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