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
记得以前学过1)during后加点时间用过去式如Our spending on gasoline increased more than 100 percent during the last decade.
2)during后加短时间用完成时如During the last ten years, economic conditions in the nation as a whole have been worse than those within the state.
所以不明白A选项it did的时态了,请大家帮忙~~~
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