单项选择题

The 2003 survey reveals that ______.

A．hostile online attacks are still rampant
B．fighting online attacks is a never-ending battle
C．other elements than technology are at work for greater security
D．new operating systems should be updated constantly to fight viruses

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热门试题

单项选择题

Which of the following elements is the most critical to online security according to the author

A．IT culture.
B．Operating systems.
C．Desktop antivirus software.
D．The efforts by online security vendors.

单项选择题

Which of the following statements does the author imply

A．In science, it is not difficult to distinguish fact from fiction.
B．Today few people have any notions of the meaning of science.
C．Practical-minded people can understand the meaning and objectives of pure science.
D．Scientists engaged in theoretical research should not be blamed for ignoring the practical side of their discoveries.