c.vessels that are thickened and constricted d.such heart diseases as sufered by old peopl 4.Many of the diseases of old people are the result of a.lack of blood b low blood pressure c.the thickening of the blood vessels 5.“Aging is not a uniform process”means tha a.old people do not have the same outward signs of aging b.not all people age at the same age c.the process of aging is slow d.nerve cells and muscle fibres do not age simultaneously 6.Which of the state ens about aging isfalse? a.People vary in their rate of aging b.The cells of the body age in different ways. c.The various parts of the body do not wear out at the same time. d.All body cells once worn out can never be replaced. 7.Which piece of information is give n in the a Gerontologists n give man a longer life b.Gerontologists can prevent diseases connected with aging c.Gerontologists have discovered that aging is controlled by a built-in biological time-clock. d.Gerontologists have found ways to slow down the process of aging. 8.According to the passage,what is responsible for many of the dise es of the old? b.The worn-out nerve cells and muscle-fibres c.The blood vessels that have become thickened and constricted d.The rigid and inflexible joints between the bonesc. vessels that are thickened and constricted d. such heart diseases as suffered by old people 4. Many of the diseases of old people are the result of ______. a. lack of blood b. low blood pressure c. the thickening of the blood vessels d. poor blood circulation 5. “Aging is not a uniform process” means that _____. a. old people do not have the same outward signs of aging b. not all people age at the same age c. the process of aging is slow d. nerve cells and muscle fibres do not age simultaneously 6. Which of the statements about aging is false? a. People vary in their rate of aging. b. The cells of the body age in different ways. c. The various parts of the body do not wear out at the same time. d. All body cells once worn out can never be replaced. 7. Which piece of information is given in the passage? a. Gerontologists can give man a longer life. b. Gerontologists can prevent diseases connected with aging. c. Gerontologists have discovered that aging is controlled by a built-in biological time-clock. d. Gerontologists have found ways to slow down the process of aging. 8. According to the passage, what is responsible for many of the diseases of the old? a. Their trouble in remembering recent events. b. The worn-out nerve cells and muscle-fibres. c. The blood vessels that have become thickened and constricted. d. The rigid and inflexible joints between the bones