单项选择题

（） has become a fact of modem life, with millions of people now shopping on-line.

A．E-mail
B．E-commerce
C．E-learning
D．E-communication

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单项选择题
The data （） includes the function of updating data on a database, and retrieving data from a database.

A．management
B．storage
C．analysis
D．communication
单项选择题
C++ fully supports （） programming，including the four properties: encapsulation, data hiding, inheritance, and polymorphism.

A．computer-oriented
B．procedure-oriented
C．object-oriented
D．aspect-oriented
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