【单选题】How old is 'old'? The answer has changed over the years. Two hundred years ago, you were old at 35. That was the average life expectancy then. At the turn of the 19th century, as medical knowledge adv...
A.
The concept of 'old' is differently defined in different times.
B.
Nobody can remain physically healthy throughout the life.
C.
The progress in medical knowledge has contributed a lot lo longer lives of us.
D.
Older people may get ill and physically disabled more easily than younger ones.
【简答题】阅读理解 Once there was an old farmer, with a horse which was almost as old as himself. He set out one morning with his son to sell the horse before it died. Father and son walked, because the farmer did ...