That evening he what he had thought about the research.
A. set about ; set down
B. set about; to set down
C. set out ; setting down
D. set out; to set down
网友回答
A. set about ; set down
B. set about; to set down
C. set out ; setting down
(答案→)D. set out; to set down
解析：本题考查set短语辨析。句意：那天晚上他着手记下他想到的关于实验的东西。
set about doing sth=set out to do sth着手做某事。