阿摩線上測驗
5.______are fed into a tape recorder, they magnetize the particles on the tapes in varying patterns.
(A) Electric waves
(B) When electric waves
(C) Because of electric waves
(D) Electric waves that
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統計： A(1), B(3), C(1), D(0), E(0) #3442663
統計： A(1), B(3), C(1), D(0), E(0) #3442663
