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A rogue loose called a hacker could take control of the entire system by implanting his own instructions in the software and the
A rogue loose called a hacker could take control of the entire system by implanting his own instructions in the software and the
admin
2010-12-25
54
问题
A rogue loose called 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“然后他能使计算机消去曾经留下的痕迹”,可知空格处的中心词为动名词,整个短语采用名词与代词的所有格形式来表达,故可排除B项。由于是过去已完成的动作,故选C。
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考博英语
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