阿摩線上測驗
73. Which of the following is NOT mentioned as a cause of pollution?
(A) burning of fuels for energy
(B) the release of noxious gases
(C) smoking and cooking
(D) using of electronic devices
答案：登入後查看
統計： A(6), B(6), C(19), D(257), E(0) #1670406
統計： A(6), B(6), C(19), D(257), E(0) #1670406
