According to the first paragraph, human beings' attitude towards the early computers can best be described as ______.

A．they were worthy of our pride
B．they were not able to think even like a human idiot
C．they could never be compared to human brains
D．they were still not capable of any human thought

A．mental abilities are characteristic of humans only
B．we are still not certain about the difference between thought and thinking
C．all animal species are in fact capable of thought
D．we need to research further to get an appropriate definition of the term "thought"