問題詳情

18. _____ that the world’s population will reach ten billion by the year 2020.
(A) Its estimation
(B) It is estimation
(C) It is estimated
(D) There is estimated

參考答案

答案:C
難度:簡單0.764706
統計:A(2),B(4),C(26),D(2),E(0)