阿摩線上測驗
151.
According to the passage, what has happened to the number of species on Earth since
1970?
(A) It has increased by over 50%.
(B) It has remained stable.
(C) It has decreased by over 50%.
(D) It has remained the same.
答案：登入後查看
統計： A(17), B(6), C(391), D(2), E(0) #3079659
統計： A(17), B(6), C(391), D(2), E(0) #3079659
