問題詳情
9 The IBM 5150 is recognized as the ancestor of the modern PC, a crucial step in computers’ evolution fromplaythings to ______ tools of modern business and private life.
(A) assessable
(B) indispensable
(C) illegible
(D) variable
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)