d) would be flooded because of the ice on the poles melting away 6. The passage is mainly related to...................
a) sudden changes in the world's temperature
b) erosion by the sea in coastal countries and their efforts to conserve their land c) how advanced the Dutch are in hydro-engineering and hydro-electric plants
d) how to reclaim land from rough terrain by the sea
Many Americans doing sedentary jobs have recently started to take physical activity back into
their daily routines since they are convinced that vigorous exercise is beneficial to their health.
Owing to the potential health benefits of physical activity; some American companies - anxious
to keep their workers as healthy and fit as possible - have started to encourage them to spend
their time at exercise centres. Studies indicate that those who engage in vigorous physical
activity suffer fewer heart attacks and even if they did, they would be less fatal. Exercise is
beneficial to the heart and lungs, if it is frequent and vigorous - the kind that raises the pulse
rate and keeps it high. If done over an extended length of time, it lowers the resting pulse rate,
blood pressure and serum cholesterol.
7. Somebody is doing a sedentary job if they...................
a) teach at a high school.
b) walk a long way to work everyday.
c) sit all day at a table with a computer on it.
d) work in a factory.
8. In view of the possible benefits of exercise some American firms have began to encourage
their employees to take as much exercise as possible because they are
a) anxious to keep their workers healthy.
b) fearful to keep their workers healthy.
c) reluctant to keep their workers healthy.
d) very eager to keep their workers healthy. 9. It is clear from the passage that…………..
a) beneficial to the health is exercise taken infrequently.
b) many American firms have already started to encourage their employees to half their shift
exercising.
c) taking exercise frequently for a long time increases the pulse rate at rest.