阿摩線上測驗
49. Energy
(A)efficient light bulbs
(B)increase greenhouse gas emissions. Also, you should flip the light
(C)switch off when you
(D)leave the room.
答案：登入後查看
統計： A(134), B(242), C(176), D(78), E(0) #2927406
統計： A(134), B(242), C(176), D(78), E(0) #2927406
