单项选择题

According to the passage, all the damage listed below could be done by a hacker EXCEPT ______.

A．entering into computers illegally
B．creating many electronic-age terms
C．removing computer systems
D．going through computer systems
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Find the same meaning as erase in the last sentence of the first paragraph.
A．Add.
B．Change.
C．Remove.
D．Store.
单项选择题
I was delighted to hear you ______ that.
A．to say
B．said
C．to have said
D．say
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