This book gives a brief of the history of the castle and details of the art collection in the main hall.
A. outline
B. reference
C. article
D. outlook
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(答案→)A. outline
B. reference
C. article
D. outlook
解析：考查名词意思辨析。 outline 轮廓, 概要; give an outline of sth. 概要说明某事。