简介:<正>Passage1Notmanyyearsago,somefarmerswereworriedbecausehawks(鹰)weretakingmanyoftheirchickens.Thefarmerskilledmanyhawks.Beforelongtheydidn’thavetoworryabouttheirchickens.Buttheyhadanewwor-ry.Fieldmicewereeatingupalotoffarm-ers’grain.Howdidthishappen?Hawkseatnotonlychickensbut