时间状语修饰

goodbaby102

大家好，有一个不明白的地方，想请教一下，关于下题的BC两选项的解释有一点是说“over the past twenty years错误修饰adulthood” 我的问题是“ over the past twenty years”是时间状语，时间状语修饰谓语动词，为什么可以错误修饰adulthood？难道只是因为它离adulthood最近吗？

Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain and its development from birth to adulthood, are now drawing solid conclusions about how the human brain grows and how babies acquire language.

(A) Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain and its development from birth to adulthood, are

(B) Neuroscientists, having amassed a wealth of knowledge about the brain and its development from birth to adulthood over the past twenty years, and are

(C) Neuroscientists amassing a wealth of knowledge about the brain and its development from birth to adulthood over the past twenty years, and are

(D) Neuroscientists have amassed a wealth of knowledge over the past twenty years about the brain and its development from birth to adulthood,

(E) Neuroscientists have amassed, over the past twenty years, a wealth of knowledge about the brain and its development from birth to adulthood,

kiwifoodtown

over the past twenty years不是修饰adulthood，而是说明from birth to adulthood这段时间长度。