单项选择题

试图用简单线性：回归分析四组数据，见下图。哪个图中的直线明显不是用最小二乘法做出的( )

A．
B．
C．
D．
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单项选择题
一个神经元的末梢和所连接的另一个神经元的膜之间的空隙叫作( )。
A．neurotransmitter cleft
B．synaptic cleft
C．presynaptic space
D．postsynaptic space
单项选择题
以下哪个关于人类视觉系统的说法是错误的( )
A．visual fibers(or axons)cross to the opposite side of the brain at the corpus callosum
B．1ayer 4c in V 1 is monocular
C．each side of the visual field is projecting to the opposite side of the cortex(i．e．each hemi-field is projecting to the opposing hemisphere)
D．adjacent areas in the visual field are projected onto adjacent areas in V 1
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