E X E R C I S E 2: Choose the correct answer according to the passage.
1. The passage tells us that the average length of time an animal species lives
A) cannot be determined until the individual has died
B) is more affected by environment than anything else
C) always changes when its environment is modified
D) can be planned by scientists who study genetics
E) depends primarily on its genes, but can be affected by other factors
2. Experiments have demonstrated that underfed rats live longer,
A) but only if they live in very cold places most of the time
B) although they also appear to develop emotional problems
C) though when their diet is devoid of carbohydrates and vitamins, but not proteins
D) and the same appears to hold true for people and other mammals
E) though this doesn't necessarily seem to be true for humans
3. Geriatric medicine aims to lengthen human life by
A) getting rid of the diseases that shorten it
B) creating medicine especially for old people
C) encouraging people to live naturally
D) restricting the individual's food consumption
E) preventing the complications resulting from vitamin deficiency
Dostları ilə paylaş: