Recently documented examples of neurogenesis神经, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons 神经细胞increasing in canaries that learn new songs.
(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 这道题怎么理解 我是不懂 D哪里错了
[此贴子已经被作者于2009/10/24 13:20:38编辑过] |