16.What is the main theme of the passage?
(A) A warning about poor workplace security.
(B) An investigation into an unsolved mystery.
(C) A detailed report on crime prevention strategies.
(D) A story highlighting the personality of a police force.
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統計: A(0), B(0), C(0), D(1), E(0) #4028022
統計: A(0), B(0), C(0), D(1), E(0) #4028022