听下面一段对话,回答1-3三个小题。 1. What is the main purpose about the passage? [ ] A. To look back to the early days when computers were used. B. To explain what practical problems occur with computers. C. To warn against people becoming mentally lazy when using computers. 2. What does an 'inner computer' refer to? [ ] A. A person's mind. B. A computer with the necessary warnings. C. A computer with all the possible answers. 3. What can we learn from the speaker's comments about computers? [ ] A. The speaker thinks people should depend more on computers. B. The speaker doesn't dare to trust computer technology any more. C. The speaker presents a cautious attitude toward computers.