問題詳情
【題組】3. If you add enough insulation to your house, you may be able to _______.
(A)improve your work environment
(B)cut your utility bills by half.
(C) get rid of air-conditioners
(D) enjoy much better health
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)