单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．Because it can send email.
B．Because it offers online discussion.
C．Because it is visible and audible.
D．Because it provides chatting service.
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单项选择题
A．About 64%.B．About 51%.C．About 49%.D．About 32%.
A．About 64%.
B．About 51%.
C．About 49%.
D．About 32%.
单项选择题
A．The internet address.B．A giant network of computers.C．An electronic mail.D．The US postal service.
A．The internet address.
B．A giant network of computers.
C．An electronic mail.
D．The US postal service.
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