单项选择题

SoBig. F damaged computer programs mainly by______.

A．sending them an overpowering number of messages
B．harvesting the addresses stored in the computers
C．infecting the computers with an invisible virus
D．destroying the anti-virus software of the computers
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单项选择题
Persons' remarks are mentioned at the beginning of the text to______.
A．show the general disapproval of gossip
B．introduce the topic of gossip
C．examine gossip from a historical perspective
D．prove the real value of gossip
单项选择题
The author's attitude toward gossip can be best described as______.
A．neutral
B．positive
C．negative
D．indifferent
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