問題詳情
【題組】7. Global residential power consumption can be cut by 43 percent if________.
(A)we increase the insulation of walls and water pipes
(B)we choose simpler models of electrical appliances
(C) we cut down on the use of refrigerators and other white goods
(D) we choose the most efficient models of refrigerators and other white goods
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)