问题标题:
owensstudied495childreninthefourthgradefromthree
问题描述:
owensstudied495childreninthefourthgradefromthree
陈中林回答:
欧文夫妇研究了495名从3年级到4年级的小孩子.
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owensstudied495childreninthefourthgradefromthree