---What’s wrong with him?
----The picture he came across his memory of a sad story in his childhood.
A. put off
B. took off
C. set off
D. gave off
网友回答
A. put off
B. took off
(答案→)C. set off
D. gave off
解析：考查固定词组，put off意思“脱掉”，took off意思“起飞”，set off意思“引起”，gave off意思“发出”，句子意思“他偶然发现的一幅画引起了他童年时代的伤心故事”