问题补充：
一Are you satisfied with the result of the exam?
一Not at all. I can have .
A. a worse one
B. a better one
C. the worst one
D. the best one
答案：
(答案→)A. a worse one
B. a better one
C. the worst one
D. the best one
解析：考查比较级的用法。不定冠词a+比较级+one意为“一个更......的......”；句意：你对考试结果满意吗？一点也不满意。差得实在不能再差了。根据句意可知，用worse，故选A。
