【求助！！！】PREP2-49 求大神们指教

cherry0402

Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture to 1950.

(A) Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture
(B) Since 1990 the growth of the global economy has been more than that during 10,000 years, from when agriculture began
(C) The growth of the global economy since 1990 exceeds that which had been for 10,000 years from the beginning of agriculture
(D) The growth of the global economy since 1990 exceeds what it has been for 10,000 years, from when agriculture began
(E) The growth of the global economy since 1990 exceeds what it did for the 10,000 years from the beginning of agriculture

正确答案A，我选了B
我主要就是纠结于，from when的这个用法不对吗？为什么呢？
还有A里it的指代问题，1990年的global economy跟during the 10000 years的global economy肯定不是一样的啊，怎么能用it指代呢？

guaiss

引用--
there's nothing ungrammatical about 'from when', because the clause starting with 'when' is a perfectly legitimate noun clause (i.e., 'when agriculture began' serves as a noun. however:

我觉得B的错在于没有体现出grow的过程 A选项说增长到什么程度  B选项只说比他多了 而且修饰growth应该用rapid吧  个人意见

enkyklios

可以。。。

cherry0402

enkyklios 发表于 2013-9-4 18:57
B我觉得不应该选 economic have been more 这算什么？from when 这个用法没有见过好像，
from which 或者直 ...

那么A里的那个指代可以么？

enkyklios

B我觉得不应该选 economic have been more 这算什么？from when 这个用法没有见过好像，
from which 或者直接用when,当然这里我觉改了以后先行词也成问题