46. The fire truck of the 21st century is a high-tech, high-powered machine that has been ________ over centuries to meet the exigencies of the modern firefighting community.
(A) curtailed
(B) reused
(C) recruited
(D) refined
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統計: A(0), B(0), C(3), D(0), E(0) #3930759
統計: A(0), B(0), C(3), D(0), E(0) #3930759