单项选择题

It is agreed that a person is more likely to suffer from arteriosclerosis ______.

A．as he becomes older
B．if his immune system does not work properly
C．when the cells of his brain and spinal chord decline
D．when the cells in his kidneys decline in number

<上一题目录下一题>

热门试题

单项选择题

As far as aging is concerned ______.

A．the changes inside human bodies are more important than exterior ones
B．the loss of competence is more significant than that of cells
C．the shrinkage of muscles is more significant than the decline in height
D．the thinning of hair is less important than the wrinkling of skin

单项选择题

A functional decline is ______.

A．the reduction in brain nerve cells
B．the decline in memory
C．the loss of cells in hearing process
D．the shrinkage in muscle tissues