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OG12-70
His studies of ice-polished rocks in his Alpine
homeland, far outside the range of present-day
glaciers, led Louis Agassiz in 1837 to propose the
concept of an age in which great ice sheets had
existed in now currently temperate areas.
(B) in which great ice sheets existed in what are
now temperate areas
答案B中what充当什么成分?
我理解前面in which 中which 指代的是an age,那后面的what指代的是什么的?
没有读明白,求各位牛人释惑 |
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