请教一道语法题

PetitAaron

请教一道语法题

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

A) Since 1990 the global economy has grown morethan it did during the 10,000 years from the beginning of agriculture

B) Since 1990 the growth of the global economyhas been more than that during 10,000 years, from when agriculture began

C) The growth of the global economy since 1990exceeds that which had been for 10,000 years from the beginning of agriculture

D) The growth of the global economy since 1990exceeds what it has been for 10,000 years, from when agriculture began

E) The growth of the global economy since 1990exceeds what it did for the 10,000 years from the beginning of agriculture.

Key: A

A选项里[size=14.6667px]during the 10,000 years from the beginning of agriculture to 1950，感觉这个时间表示了过去的过去，为什么than后面还要用一般过去时而不是过去完成时呢？求大神赐教，谢谢！

深高金的zkk

不要去纠结这些东西，时态语态不是你自己决定的，而是非划线部分的“大环境”决定的。
时态语态的考点看的是前后时态一致不一致。

尚舟明

个人见解是Since后面说的是从那个时候起【到现在】，所以前一句并不能认为是纯过去发生的，所以第二句也无从谈过去的过去。