单项选择题

More and more people will so on appreciate v-mail service probably because ______.

A．it is very efficient
B．it is very cheap
C．it brings a lot of fun
D．it attracts young people
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单项选择题
From the last sentence of this passage, we come to know that ______.
A．technology has not prepared itself for the development of v-mail
B．technology is not advanced enough for the development of v-mail
C．advertisers will not show much interest in v-mail business for a while
D．advertisers will show little interest in v-mail business for quite long
单项选择题
Internet companies feel confident about the v-mail market as ______.
A．the monthly fee of v-mail service has dropped a lot
B．there are a great number of Internet users each week
C．cheap video-mail offerings have recently been introduced
D．a great number of Internet users send messages each week
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