Thesunishuge,hotandbright(明亮度).Itisimportantbecausenoth...
问题详情：Thesunishuge,hotandbright(明亮度).Itisimportantbecausenothingcanlivewithoutit.Thesungivesuslight(光)andheat.Alllivingthingsneedlightandheatfromthesuntolive.Plantsneedlightandheattogrow.Theyuse...