2. 职称英语
  3. A hacker could take control of the entire system by implanting his own instructi

A hacker could take control of the entire system by implanting his own instructi

游客2025-04-17  11
问题 A hacker could take control of the entire system by implanting his own instructions in the software and then he could program the computer to erase any sign______.
选项 A、of his being ever there
B、he ever has been there
C、of his having ever been there
D、of him having ever been there
答案 C
解析 根据空格处的意思：然后他能使计算机抹去他曾经留下的痕迹，可知空格处的主语为动名词，用名词与代词的所有格形式来表达，可排除B项，并且是过去已完成的动作，故选C。
转载请注明原文地址:http://tihaiku.com/zcyy/4042078.html
相关试题推荐
随机试题
最新回复(0)