40. The Roman Empire was powerful ____________.
(A) partly because Rome was a well-located city
(B) for over 1,500 years
(C) because it could rely on the strength of religion
(D) due to its history
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統計: A(59), B(5), C(7), D(6), E(0) #2365550
統計: A(59), B(5), C(7), D(6), E(0) #2365550