23．________，so the Egyptians invented balls instead．

题目：23．________，so the Egyptians invented balls instead．

A． Throwing stones was a popular game for children
B． Stones were．too heavy to throw
C． Stones might hurt children
D． They didn’t have so many stones

喵查答案：C

23.C【解析】由第二段第二、三句可知，如果石子扔不好就会伤到孩子，为了减少危险，人们发明了球。