阿摩線上測驗
19. A carbon footprint is the amount of greenhouse gases, such as carbon dioxide (CO2), ______ by
a country or a person in one year.
(A) emitting
(B) emitted
(C) being emitting
(D) to emit
答案：登入後查看
統計： A(31), B(418), C(21), D(3), E(0) #2752389
統計： A(31), B(418), C(21), D(3), E(0) #2752389
