Question

【题目】He is serous _________ running. He wants to be a professional runner.

A. for B. in C. at D. about

Answer 1

【答案】D

【解析】句意：他认真对待跑步。他想成为一名职业运动员。根据短语be serious about sth.对…是认真的，认真对待；结合句意和选项可知选D。