扫描二维码，直接登录
题库 / Prep2007E1-SC-64
Recently documented examples of neurogenesis, 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.
the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that
mice whose brains grow when they are placed in a stimulating environment or canaries whose neurons increase when they
mice's brains that grow when they are placed in a stimulating environment or canaries' neurons that increase when they
the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they
brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that
D中when是省略主语的，可以理解为anything，老鼠的大脑增长并不是把任意东西放在刺激环境中都会发生的，只有把老鼠放进去才会发生。
登录 或 注册 后可以参加讨论