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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
"examples of neurogenesis include" - so the examples should lead off with whatever the actual thing is that indicated neurogenesis. The mice aren't the example - the example is the brain growth. That eliminates B and C. A also breaks parallelism.
And the other thing wrong with A, B, C and D is "when placed in a stimulating environment" - it sounds like they are referring only to the time that the mice are in the stimulating environment - but the brain growth is permanent. It doesn't shrink back down once the mice are no longer in the stimulating environment. Ditto for the increase in neurons in the canaries.
CHOICE E：“the brain growth in mice" ---"an increase in neurons in canaries" 平行，，找核心词 “growth” --- "increase"
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