单项选择题

The word "scrutinize" (Paragraph 2) can be best replaced by ______.

A．"improve"
B．"examine closely"
C．"experiment with"
D．"make use of"
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单项选择题
The second paragraph attempts to tell us that ______.
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"
单项选择题
According to the first paragraph, human beings' attitude towards the early computers can best be described as ______.
A．indifferent
B．ambiguous
C．contemptuous
D．hostile
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