86. In the first paragraph, the telephone number is cited to show
A. many customers didn't keep their privacy confidential.
B. it is harmful to give a store clerk a telephone number.
C. careless disposal of personal information can be harmful.
D. customers should inquire its use when giving telephone numbers to others.
87. What do companies like Acxiom and Merlin do?
A. Compile telephone directories for businessmen.
B. Collect and sell personal information to make a profit.
C. Trade commodities like corn on the market.
D. Crack down crimes like stealing private information.
88, From Paragraph 3, we learn that
A. cases of privacy intrusion happen only in large institutions.
B. people are quite aware of how their privacy is intruded.
C. it is not privacy intrusion when a wife glances at her husband's cell phone.
D. Bill Gates' email messages were cited as evidence against him.
89. It can be inferred from the fourth paragraph that the author thinks
A. Americans are actually concerned about privacy issues.
B. Americans are indifferent to privacy concerns.
C. Americans are very frank about privacy concerns.
D. Americans are puzzled about privacy concerns.
90. Which of the following is the author's viewpoint?
A. Never give your private information to anyone.
B. People should pay more attention to their privacy issues.
C. Do not surrender your email to any website.
D. It does no good saying "I have nothing to hide".