单项选择题

The author's purpose of writing this article is to present the historical view of ______.

A．the developmental patterning of the neural circuits
B．the sensory field of the cerebral cortex
C．variations in size, shape, chemistry, conduction speed of nerve pulses
D．physiological correlates of mental experience
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单项选择题
From the passage we know that the nerve impulses in human beings ______.
A．are lack of differentiation in quality
B．are similar in size, number, and arrangements
C．reveal qualitative diversity
D．spasmodically pass through the nervous system
单项选择题
The description of the experiment in which electric stimuli were applied to different sensory fields of the cerebral cortex tends to support the theory that ______.
A．different modes of sensation might be correlated with the discharge of specific kinds of nervous energy
B．nerve cell units conduct essentially homogeneous impulses through homogeneous cerebral tissue
C．the mental experiences produced by sensory nerve impulses are determined by the cortical area activated
D．quality of the impulse or its conduction was influenced by the different modes of sensation
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