3. Experts _____ that insects can be good sources of protein.(A) monitor (B) maintain (C) retain (D)

問題詳情

3. Experts _____ that insects can be good sources of protein.
(A) monitor
(B) maintain
(C) retain
(D) certain

參考答案

答案：B
難度：適中0.625
統計：A(8),B(20),C(3),D(1),E(0)

用户評論

【Olga Huang】評論

maintain 聲稱，斷言retain 保留，保持certain 確信，不可避免地

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