单项选择题

What makes it more difficult to deal with the virus named SirCam

A．It will regularly pop up even when discovered.
B．It has a staying power in social engineering.
C．It takes a Microsoft Word document.
D．It is labeled various intriguing subject lines.

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单项选择题

The reason for the necessity of Continuing Education is that

A．you have to stay current in your discipline.
B．new ideas and technologies are to be discussed.
C．you have just completed your studies.
D．you are just beginning to work.

单项选择题

What does the author mean by saying gaining momentum on the Internet

A．Becoming more and more serious.
B．Being the most important moment.
C．Having the bigger and bigger impetus.
D．Gaining more velocity and weight.