【每日听力 • 真题系列】
In 2000, 1 for centenarians were heart disease, stroke, 2 , cancer and Alzheimer's disease. But by 2014, the death rate from Alzheimer's disease for this age group had 3 – increasing from 4 – making the 5 brain disease 6 of death for centenarians.
【出处:2016年12月六级听力第二套,篇章2】