单项选择题

In the sentence "To do this, we need to persuade mankind." (Par

A．1), "this" refers to ______.A. abolish warB. improve weaponsC. solve international problemsD. live a peaceful life
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单项选择题
Conrad and his group of AI researchers have been making enormous efforts to ______.
A．find a roundabout way to design powerful computers
B．build a computer using a clever network of switches
C．find out how intelligence developed in nature
D．separate the highest and most abstract levels of thought
单项选择题
What's the author's opinion about the new AI movement
A．It has created a sensation among artificial intelligence researchers but will soon die out.
B．It's a breakthrough in duplicating human thought processes.
C．It's more like a peculiar game rather than a real scientific effort.
D．It may prove to be in the right direction though nobody is sure of its future prospects.
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