【题目】Down ran an old man who was ______ convinced of the benefits of running, so he ran everyday.
A. roughly B. mildly C. firmly D. deliberately
在线课程【答案】C
【解析】
试题分析：句意：跑下来的这个老人坚信跑步的好处，所以他每天跑。A. roughly概略地; B. mildly温和地; C. firmly坚定地; D. deliberately故意地，四项都为副词。根据句意判断选C.