单项选择题

This passage implies that war is now ______.

A．worse than in the past
B．as bad as in the past
C．not so dangerous as in the past
D．as necessary as in the past
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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
The new trend in artificial intelligence research stems from ______.
A．the shift of the focus of study on to the recognition of the shapes of objects
B．the belief that human intelligence cannot be duplicated with logical, step-by-step programs
C．the aspirations of scientists to duplicate the intelligence of a ten-month-old child
D．the efforts made by scientists in the study of the similarities between transistors and brain ceils
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