GWD13-30求教

zhangxiru2006

For the first time in the modern era, non-Hispanic Whites are officially a minority in California, which amounts to a little less than half the population of the state, down from nearly there-quarters only a decade ago.

A.    which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago
B.    which amounts to a little less than half the population of the state, down from a decade ago, when it was nearly three-quarters
C.    and that amounts to a little less than half the population of the state, down from a decade ago, when they were nearly three-quarters
D.    amounting to a little less than half the population of the state, down from nearly three-quarters a decade ago
E.    amounting to a little less than half the population of the state, down from what it was a decade ago by nearly three-quarters
答案 D。
我有点搞不懂down from nearly three-quarters a decade ago这句话，from可以这样用吗？这样没有表述 不清吗？虽然我也觉得E表达的很啰嗦，但是很清晰啊，可是D的用法怎么看都表述不清。这里有涉及到from这个词的什么用法吗？望牛人解答，感谢。。。

HarrisZheng

补全一下就能理解了  

down to  a little less than half from there-quarters

从四分之三降低到不足二分之一

zhangxiru2006

谢谢一楼。