问题补充:
This year they have produced___grain___they did last year.
A. as less; as
B. as few; as
C. less; than
D. fewer; than
答案:
A. as less; as
B. as few; as
(答案→)C. less; than
D. fewer; than
解析:grain为不可数名词,不能用few修饰。故排除B和D;as...as是表示同级比较的结构,而less是little的比较级,故排除A。