- 問題詳情: Thereareforty-eightstudentsinourclass.Therearetwenty-threeboysandtwenty-fivegirls.Somestudentsliveneartheschool,andsomeothersliveveryfarfromtheschool.Abouthalfofthestudentscometoschoolbybike.Theyoftengettoschoolataquartertoseven.Aboutte...
- 18376