大全283（还有一问不清楚）

283. Even though its per capita food supply hardly increased during two decades, stringent rationing and planned distribution have allowed the People’s Republic of China to ensure nutritional levels of 2,000 calories per person per day for its population.

(A) Even though its per capita food supply hardly increased during

(B) Even though its per capita food supply has hardly increased in

(C) Despite its per capita food supply hardly increasing over

(D) Despite there being hardly any increase in its per capita food supply during（B）

OG 的解释是：Also in is the best word here for making a comparison between the beginning and the end of the twenty-year period.

这里的in 到底比during好在哪里？

(E) Although there is hardly any increase in per capita food supply for

in:  between the beginning and the end of a period of time     强调状态和结果

during: from the beginning to the end of a period of time         强调过程

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=20295

或者说，during的句子中，一般用过去时，现在时，而不用完成时。因此排除有during的答案

我也觉得during强调的是过程.

可能在某段时间内曾经增加过,但有降了,最后终点比起点低,着是in强调的, 也是原文的意思.