问题补充：
The price of food is this year than that of last year.
A. 8% high
B. 8% as high
C. 8% higher
D. 8% as higher
答案：
A. 8% high
B. 8% as high
(答案→)C. 8% higher
D. 8% as higher
解析：
试题分析:考查形容词用法。由than可知此处是比较级，排除A、B选项，而D选项形式错误，所以选C。句意：今年食品的价格比去年的价格高了8%。
