What is the main purpose of this passage? A) To look back to the early days of computers. B) To explain what technical problems may occur with computers. C) To discourage unnecessary investment in computers. D) To warn against a mentally lazy attitude towards computers.

What is the main purpose of this passage?

A) To look back to the early days of computers.

B) To explain what technical problems may occur with computers.

C) To discourage unnecessary investment in computers.

D) To warn against a mentally lazy attitude towards computers.

出自：河南城建学院-大学英语2

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