What does the professor compare to a housefly laying many eggs？

A．A child learning many different ideas from his or her parents

B．Alligators reproducing in New York sewers

C．Different people remembering different versions of a story

D．A person singing the "Twinkle, twinkle" song many times

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！

教师考试 导游证考试 房产评估类 人资类别 IT计算机证 社会工作 法律类别 职业资格类 外贸类 特种作业考试 交通交规 通信类考试 软考考试 项目管理 计算机等级考试