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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
看了半天觉得B也没问题呀，whose不仅可以用来指物，也可以用来指人呀，并且句式上也是平行的，难道仅仅是因为when用错了，必须要用that吗？
B的最大问题是改变了句子意思。原句的意思是example of neurogenesis包含什么。而neurogenesis指的是the production of new brain cells。所以example包含的应该是和脑细胞相关的，而B直接给出的是两种动物。所以意思不对了。
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