3. Drug trials did not provide sufficient ____ that the medicine is effective.
(A) clue
(B) goods
(C) witness
(D) evidence

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統計: A(26), B(30), C(24), D(338), E(0) #2431782

詳解 (共 1 筆)

#4216018
(A)線索 (B)貨物 (C)證人 ...
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