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

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热门试题

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

单项选择题

How can the users of terminals without processing capability acquire the necessary information？（）

A．They can simply use a keyboard or a mouse.
B．They should use a modem to maintain the host system.
C．They should connect their computer to a satellite system.
D．They can access its base through the programs on the system.