37. Over 2,000 years ago, Aristotle ________ the first classification system.
(A)increased
(B)spent
(C)invented
(D)married
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統計: A(661), B(136), C(6108), D(52), E(0) #310164
統計: A(661), B(136), C(6108), D(52), E(0) #310164