A．the human body can't be compared to a car
B．the older a person, the more care he needs
C．too much emphasis has been put on old people's values
D．it is easy to provide spare parts for old people

A．the conclusion you have come to
B．whether age is happy or unpleasant
C．your talk to the old people
D．one's money or one's health

A．medical decisions for old people should be left to the doctors
B．old people can enjoy a happy life only if they are very rich
C．the opinion that we should try every means possible to save old people is doubtful
D．it is always morally right to treat old people and push off death