单项选择题

When an e-mail phone is being used to make phone calls, it ______.

A．cannot receive new messages
B．send out a signal of new messages
C．cannot display e-mail messages
D．automatically checks new messages
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单项选择题
An e-mail phone is an improved device of telecommunication in that ______.
A．it can record a message in the form of e-mails
B．it can be used to receive and send e-mails
C．it can be connected with computers
D．it can be used to visit websites
单项选择题
It can be inferred from the passage that e-mails phones are designed to ______.
A．make transmission of e-mail messages faster
B．make communication through e-mails cheaper
C．make communication through e-mails easier
D．make communication through e-mails more popular
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