考博考试

【单选题】 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

网考网参考答案：A
网考网解析：
第一段作者提到important tissues．．．to the brain shrink and become less competent with age．Many of these changes are reflected in functional decline，可以判断功能性减退指的是脑神经细胞的减少，而记忆减退只是其中的表现之一。 查看试题解析出处>>