Chronic heart failure is associated with____________.
A. the death of heart cells
B. the life span of a person
C. the effects of pharmaceuticals
D. the weight of the patient
查看答案
The people who‘re in their mid-70s， only 0.45 percent ofcardiomyocytes____________.
A. are still functional
B. are replaced each year
C. are lost each year
D. are damaged each year
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