[不定项选择题]共用题干 Old and Active

It is well-known that life expectancy is longer in Japan than in most other countries.A________(51)
report also shows that Japan has the longest health expectancy in the world.A healthy long life is the result
of the________(52)in social environment.
Scientists are trying to work__________(53)exactly what keeps elderly Japanese people so healthy,and
whether there is a lesson to be_________(54)from their lifestyles for the rest of us.Should we________
(55)any changes to our eating habits,for instance,or go jogging each day before breakfast?Is there some
secret___________(56)in the Japanese diet that is particularly___________(57)to the human body?
Another factor____________(58)to the rapid population aging in Japan is a decline in birthrate.Although
longer life should be celebrated,it is____________(59)considered a social problem.The number of older
people had__________(60)in the last half century and that has increased pension and medical costs.The
country could soon be____________(61)an economic problem,if there are so many old people to be looked
___________(62),and relatively few younger people working and paying taxes to support them.
___________(63)the retirement age from 65 to 70 could be one solution to the problem.Work can give
the elderly a___________(64)of responsibility and mission in life.It's important that the elderly play active
________(65)in the society and live in harmony with all generations. _________(62)
A.for
B.after
C.over
D.out