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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 749

Alot of language learning,       has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.

A.as B.it C.which D.this
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Alotoflanguagelearning,hasbeen