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
The author says that the powerful computers of today ______.
A．are capable of reliably recognizing the shape of an object
B．are close to exhibiting humanlike behavior
C．are not very different in their performance from those of the 50's
D．still cannot communicate with people in a human language
单项选择题
Which of the following is closest in meaning to the underlined phrase the only game in town (Line 3', Par
A．4 ) A. The only approach to building an artificially intelligent computer.B. The only way for them to win a prize in artificial intelligence research.C. The only area worth studying in computer science.D. The only game they would like to play in town.
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