Theabilitytostoreknowledgemakescomputersdifferentfromeveryothermachineinvented.A)everB)thusC)yetD)as为什么选A不选D

Question

The ability to store knowledge makes computers different from every other machine ______ invented.
A) ever B) thus C) yet D)as 为什么选A 不选D

Answer 1

ever这里是副词,和invented一起做machine的后置定语,过去分词表示被动.
as引导定语从句,如果要用as引导的从句修饰machine,句子应为：every other machine as has been ever invented.