問題詳情
【題組】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)
用户評論
【用戶】林孟瑤
【年級】小一下
【評論內容】One way to do this is to cut down on our use of fossil fuels like coal and oil, which is possible but must be done gradually: coal and oil can be replaced over a period of time by wind energy and solar power.