47. What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to users who want to get married.
B. It s money by putting on advertisements.
C. It makes money by selling its users’ personal data.
D. It provides loads of information to its users.
48. What does the author say about most Facebook users?
A. They are unwilling to give up their personal information.
B. They don’t know their personal data enriches Facebook.
C. They don’t identify themselves when using the website.
D. They care very little about their personal information.
49. Why does Facebook make changes to its rules according to Elliot Schrage?
A. To provide better service to its users.
B. To obey the Federal guidelines.
C. To improve its users’ connection
D. To expand its business.
50. Why does the author plan to cancel his Facebook account?
A. He is dissatisfied with its present service.
B. He finds many of its users untrustworthy.
C. He doesn’t want his personal data badly used.
D. He is upset by its frequent rule changes.
第二节 (共5小题;每小题2分,满分10分)
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