問題詳情

25 Because of the advanced medical technology, infant mortality_____ in the past thirty years.
(A) has fallen
(B) had fallen
(C) is falling
(D) was falling

參考答案

答案：A
難度：困難0.277778
統計：A(5),B(6),C(0),D(2),E(0)

用户評論

【用戶】Hypermotard

【年級】大三下

【評論內容】 infant mortality 新生兒死亡率

【用戶】Standhal Wen

【年級】大一上

【評論內容】mortality死亡