阿摩線上測驗
10. According to recent scientific studies, _____ from cars is the main cause of global warming.
(A) pollution
(B) solution
(C) selection
(D) population
答案：登入後查看
統計： A(2472), B(137), C(63), D(124), E(0) #666125
統計： A(2472), B(137), C(63), D(124), E(0) #666125
