問題詳情

42 According to the passage, when can the use of coal and oil be replaced by wind energy and solar power?
(A) immediately
(B) over a period of time
(C) after a long time
(D) never

參考答案

答案:B
難度:簡單0.75
統計:A(4),B(15),C(1),D(0),E(0)

內容推薦

內容推薦