- 问题详情:"Yourhomeworkistocollectsoundsandtakethemdown,"Mrs.Olsonsaidbeforeclasswasover.Shehandedoutsheetsofpapershapedlikegiantears.Onhiswayhome,Colinglaredouttheschool-buswindow.Notfair,hethought.Howcouldhecollectenoughsoundsonhisfamily'sfarm?Ifo...
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