阿摩線上測驗
21 In Aristotle’s cosmos, what separated the earth from the other planets?
(A)Asteroids
(B)The moon
(C)Stars
(D)The sun
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統計： A(19), B(55), C(11), D(2), E(0) #1192127
統計： A(19), B(55), C(11), D(2), E(0) #1192127
