問題詳情

18. Smart cellphones _____.
(A) can use as a computer
(B) are using to send e-mails and pay bills
(C) can be used in many ways
(D) used by people wisely

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)