In order to find out how the famous painting was stolen as soon as possible, more experienced policemen have been sent to the case.
A. look for
B. look up
C. look into
D. look through
网友回答
A. look for
B. look up
(答案→)C. look into
D. look through
解析：考查短语辨析，look for寻找，look up查字典， look into调查，look through浏览，根据句意更多有经验的警察被派出去调查这个案件。故选C。