問題詳情

【題組】11.( ) John always backs up his computer files before he leaves the office every evening as a ___ against any system failures. (教一)
(A) resistance
(B) precaution
(C) conscience
(D) hesitation

參考答案

答案：B
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)