The writer' s attitude towards the use of a computer can be best described as

A．it saves a lot of time to find information needed.
B．it reads more efficiently than a human mind.
C．it covers a much wider range of reference.
D．it guarantees reading efficiency and validity.

A．specific information for a research.
B．printed material in general.
C．words that are designated.
D．fiction written by famous writers.