問題詳情

【題組】49. “The average life span” means:______ .
(A) The average life expectancy
(B) The average birth rate
(C) The average age of having the first baby
(D) The average household income

參考答案

答案：A
難度：非常簡單1
統計：A(1),B(0),C(0),D(0),E(0)