- 问题详情:Thesunishuge,hotandbright(明亮度).Itisimportantbecausenothingcanlivewithoutit.Thesungivesuslight(光)andheat.Alllivingthingsneedlightandheatfromthesuntolive.Plantsneedlightandheattogrow.Theyusethelightfromthesuntomakefood.Wecannotmakeourownfoo...
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