填空题从七个选项中挑选合适的内容，完成每个带数字的句子。 Text
1 We have to realize how old, how very old, we are.
Nations are classified as "aged" when they have 7 per cent or more of their
people aged 65 or above, and by about 1970 every one of the advanced countries
had become like this. Of the really ancient societies, with over 13 per cent
above 65, all are in Northwestern Europe. We know that we are getting even
older, and that the nearer a society approximates to zero population growth, the
older its population is likely to be--at least, for any future that concerns us
now. To these now familiar facts a number of further facts may
be added, some of them only recently recognized. There is the apparent paradox
that the effective cause of the high proportion of the old is births rather than
deaths. There is the economic principle that the dependency ratio--the degree to
which those who cannot earn depend for a living on those who can--is more
advantageous in older societies like ours than in the younger societies of the
developing world, because lots of dependent babies are more of a liability than
numbers of the inactive aged. There is the appreciation of the historical truth
that the aging of advanced societies has been a sudden change.
If "revolution" is a rapid resettlement of the social structure, and if the age
composition of the society counts as a very important aspect of that social
structure, then there has been a social revolution in European and particularly
Western European society within the lifetime of everyone over 50. Taken
together, these things have implications which are only beginning to be
acknowledged. These facts and circumstances had a leading position at a world
gathering about aging as a challenge to science and to policy, held at Vichy in
France. There is often resistance to the idea that it is
because the birth rate fell earlier in Western and Northwestern Europe than
elsewhere, rather than because of any change in the death rate, that we have
grown so old. Long life is altering our society, of course, but in experiential
terms. We have among us a very much greater experience of continued living than
any society that has ever preceded us anywhere, and this will continue. But too
much of that lengthened experience, even in the wealthy West, will be experience
of poverty and neglect, unless we do something about it. If
you are in your thirties, you ought to be aware that you can expect to live
nearly one third of the rest of your life after the age of 60. The older you are
now, of course, the greater this proportion will be, and greater still if you
are a woman. [A] experienced in poor conditions.
[B] more likely to live longer. [C] discuss aging as a
challenge both science and policy confronts. [D] these things
have far-reaching implications. [E] the degree to which those
non-earners rely on those earners. [F] the older its
population tends to be. [G] the early drop in birth
rate.
填空题
The closer a society gets to zero population increase, ______
填空题
The dependency ratio means ______
填空题
A world conference was held at Vichy in France to ______
填空题
The Europeans have grown so old because of ______