____ were invented, patients had to be held down by force during painful operations.(A) As anest

問題詳情

13. ____ were invented, patients had to be held down by force during painful operations.
(A) As anesthetics
(B) Because anesthetics
(C) Before anesthetics
(D) Anesthetics

參考答案

答案：C
難度：適中0.65
書單：沒有書單，新增

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