Question

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

Answer 1

A

解析试题分析:句意：正如人们发现的，大量的语言学习是发生在人出生后的第一年，所以家长们应该在这段时期要多和孩子讲话。从结构判断此处是非限制性定语从句，排除B、D选项；as引导定语从句译成“正如，就像　”，而which 译成“这一点，”，所以答案选A。
考点：考查定语从句。