![Scientistshavelearnedalotaboutthekindsoffoodpeopleneed....]( "Scientistshavelearnedalotaboutthekindsoffoodpeopleneed....")
- 問題詳情：Scientistshavelearnedalotaboutthekindsoffoodpeopleneed.Theysaythatthereareseveralkindsoffoodthatpeopleshouldeateveryday.Theyare:(1)greenandyellowvegetablesofallkinds;(2)citrus（柑橘）fruitsandtomatoes;(3)potatoesandotherfruitsandvegetables;(4)mea...
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