Exercise is as any other to lose unwanted weight.
A. so useful a way
B. as a useful way
C. as useful a way
D. such a useful way
网友回答
A. so useful a way
B. as a useful way
(答案→)C. as useful a way
D. such a useful way
解析：本题是形容词比较级的用法考查。as+adj．+as表示“和……一样”。若as之间出现名词排列顺序应为as+a由．+a／an+n．+as。