A.was released to test how people regarded their private rights
B.revolutionized the concept of the social networking function
C.ruined the reputation of Google's well-known Gmail system
D.aroused people's anger when it was added to Gmail system
A.Google thought to promote users' awareness on socializing
B.Google made a mistake in judging their users' needs
C.people were in tune with Google's developing strategies
D.the development of the digital age will change old opinions
A.People can tolerate the private information sharing within the social norms.
B.People are still too conservative to share their private information.
C.People tend to keep up with the change of social norms on privacy.
D.People have tolerated well when their private information has been shared.
A.upgrade their service to adapt to customers' needs
B.ask customers to pay more for their service
C.provide more entertainments for online users
D.persuade users to give up rights on privacy