阿摩線上測驗
1. The scientists_____many experiments to prove that the drug was effective.
(A)took
(B)achieved
(C)made
(D)did
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統計： A(31), B(7), C(29), D(96), E(0) #589460
統計： A(31), B(7), C(29), D(96), E(0) #589460
