57. What does the underlined word “correspondence” in the Paragraph 1 probably mean? (A)messages (B)ideas (C)connections (D)programs

58.According to the text, what is the major cause of the flooding spam? (A)Companies rely on e-mail for communications. (B)More people in the world communicate by e-mail. (C)Many computer viruses contain spam e-mail. (D)More advertisers begin to promote sales through spam.