单项选择题

Directions: In this section you will hear two mini-talks. At the end of each talk, there will be some questions. Both the talks and the questions will be read only once. After each question, there will be a pause. During the pause.
What message does the talk intend to convey

A. Junk mail takes a large portion of our e-mail.
B. E-mail is very popular with Americans.
C. Many people become e-mail addicts.
D. E-mailing systems may sometimes go wrong.