問題詳情

12. Solar power is an eco-friendly source of energy that we can __________ as a substitutefor the other sources to protect our planet.
(A) preserve
(B) generate
(C) operate
(D) utilize

參考答案

答案：D
難度：適中0.518519
統計：A(3),B(2),C(5),D(14),E(0)