It has traditionally been thought that all biological functions decline with age, but according to the National Institute on Aging, certain important capabilities, such as the output of the heart understress and intellectual vigor, remain essentially unchanged.
(A)the output of the heart understress and intellectal vigor
(B)the heart's output under stress and intellectual vigor
(C)intellectual vigor and the output of the heart understress
(D)intellectual vigor and the effect of strss on the heart's output
(E)the effect of stress on the heart's output and intellectual vigor
我選(c)
(A)和 (c) 有什麼不一樣
答案是 (A)
請高人幫幫忙
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