单项选择题

The passage is mainly about （）.

A．the payment for online services
B．the functions of online services
C．the development of online services
D．the relation between online services and the users

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单项选择题

If you want to read full-text journals online, you usually have to （）.

A．seek for a large amount of information
B．be connected to various databases
C．be introduced by the local library
D．pay a monthly membership fee

单项选择题

If you copy the online information onto your PC device, you will （）.

A．save the time of connecting to the online system
B．reduce the risk of losing information
C．pay just local telephone charges
D．get local information only