A lot 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正确答案A
A lot 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正确答案A
