The book is primarily Soviet-American relations during the Cold War.
A. concerned about
B. concerned with
C. concerned for
D. concerned in
网友回答
A. concerned about
(答案→)B. concerned with
C. concerned for
D. concerned in
解析：考查短语。be concerned with与 ... 有关，这本书主要与冷战期间的美苏关系有关。