問題詳情

2. As the planet’s energy needs grow, we must _______the use of our limited resources and at the same timeminimize their environmental impact.
(A) optimize
(B) opaque
(C) operate
(D)oppose

參考答案

答案:A
難度:適中0.505263
統計:A(96),B(15),C(43),D(10),E(0)

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