- 问题详情:Sallyhasanewbikeandshelikessports.Sosheridesherbiketoschooleveryday.Ittakesherabout10minutes.Jim,Sally’sbrother,isshorterandthinnerthanher.Buthelikessports,too.Everydayhewalkstoschool,andhishomeisabouttwomilesfromschool.Ittakeshimabouttwenty...
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