单项选择题

For companies, the threat of drive-by hacking seems set to grow as software programs assisting hackers proliferate on the Internet.

A．obliterate
B．multiply
C．stack
D．precipitate
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单项选择题
Modern printing equipment quickly turns out duplicate copies of textual and pictorial matter.
A．identical
B．excessive
C．illustrated
D．legible
单项选择题
She said it did not help for foreign leaders to badger the United States into action.
A．bother
B．urge
C．rush
D．hinder
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