单项选择题

Badtrans-B is

A．an anti-virus program.
B．an expert on viruses.
C．an anti-virus company.
D．a new virus foun
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单项选择题
The main idea of the second paragraph is
A．how to avoid double-click on infected email attachments.
B．how emails both carry and spread viruses and worms.
C．what new viruses can automatically launch themselves.
D．what new viruses are capable of with an double-click on.
单项选择题
What is the problem when few realize the link between the ability to talk fast and easily understandable pronunciation and meaning
A．They can actively learn vocabulary items or good syntax.
B．The students have many cognitive problems themselves.
C．It is difficult to talk fast and easily understandably.
D．The need for speed is not clear at the very beginnin
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