PREP SC 看不懂的一题

15. Recently documented examples of neurogenesis（神经形成）, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs.DE

A. the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that

B. mice whose brains grow when they are placed in a stimulating environment or canaries whose neurons increase when they

C. mice's brains that grow when they are placed in a stimulating environment or canaries' neurons that increase when they

D. the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they

E. brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that

A: when placed的逻辑主语是production而不是邻近的mice，句意错；动名词growing和increasing应该改成名词growth，increase

B: they指代不明，可以指代brains或mice；第二个they和第一个they不是一个对象

C: they指代brains不对；第二个they和第一个they不是一个对象

D: when placed的逻辑主语是production而不是邻近的mice，句意错；

E: correct

这正确选项中的learn songs难道是修饰 neurons 吗？有大牛可以翻译一下此句吗？读不懂就是读不懂啊

我觉得这句话关键是在于平行，include brain growth in mice or an increase in neurons 。

learn new songs 应该是修饰前面的canaries 金丝雀。

句子主干的意思就是  例子包括 当把老鼠放在一个刺激性环境时，它们的智力增长  或者   当金丝雀学习唱新歌的时候，它们神经细胞的增加。

E. brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that

是很工整的并列

A that  + 定语从句 or B that + 定语从句

是很工整的并列

A that  + 定语从句 or B that + 定语从句