单项选择题
A.Effects of a stroke B.Annual cost of stroke in the US C.Definition and description of a stroke D.Breakthroughs in treatment E.Risk factors of stroke F.Warning signs of a stroke
It is not hard to find five 100-year-olds living in one...
单项选择题It is not hard to find five 100-year-olds living in one place in America. ()
A.Right B.Wrong C.Not mentioned
Currently about 70,000 people are aged 100 or above in ...
单项选择题Currently about 70,000 people are aged 100 or above in America. ()
None of the five centenarians have any children. ()A.Ri...
单项选择题None of the five centenarians have any children. ()