OG 12 sc 70 求解

blacksheep1986

OG-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.

(A) 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

(C) when great ice sheets existed where there were areas now temperate

(D) when great ice sheets had existed in current temperate areas（B）

(E) when great ice sheets existed in areas now that are temperate

e 项为啥不对啊

邦得

1 曼哈顿上说修饰像age表时间这样的名词  最好后面跟in which
2 areas now that are temperate 啰嗦  直接说temperate area即可
3 OG解释说now应该放在be动词后面  这样 that可以直接修饰它要修饰的名词

mrj1104

可是B中的what  are 加了有什么用的呀