問題詳情
269.Scientists in Antarctica have difficulty____ individual penguins because they look very much alike.
(A) identification
(B) identify
(C) identifying
(D) to identify
參考答案
答案：C
難度：適中0.619048
統計：A(0),B(1),C(13),D(5),E(0)
用户評論
【用戶】Dora:考上即捐贈vip
【年級】大一上
【評論內容】句意：在南極的科學家無法辨識出各別企鵝（之差異），因為每隻都一樣。someone has difficulty +Ving就是指在做該動詞的事有困難。很難⋯無法⋯