Nowadays people use many methods to keep fit. For example,
taking exercise and going on a diet. What is the purpose of keeping fit The
(36) of keeping fit is to avoid ill health, (37)
the mental and physical fatigue that makes us more likely to
contract (38) , and above all, to feel more (39)
in being alive. Research has shown the value of a (40)
diet, fresh air, sunshine, (41) rest and some form
of (42) exercise for everyone. If everyone followed this
plan, the number of people visiting the doctor and going to hospital would be
(43) reduced. Unfortunately, (44) . We spend
too much time watching others from the comfort of an armchair or a seat in the
stand at a sports stadium. One reason why people who are physically fit live
longer is that (45) . The also avoid suffering the
consequences of weakened muscles. About 640 muscles account for about 45% of our
body’s weight, (46) .Sensible exercise, suited to each
individual and preferably undertaken on the advice of a doctor, is the best
insurance of meeting these requirements.
【参考答案】
they must have the ability to store energy and be continuall......