大学英语：The nearer a society approximates to zero

   80. 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. P3
    81. To these now familiar facts a number of further facts may be added, some of them only recently recognized. P4
    82. There is the appreciation of the salient historical truth that the aging of advanced societies has been a sudden change. P4
    83.   Taken together,  these things have implications which are only beginning to be acknowledged. P5
    84. There is often resistance to the idea that it is because the birthrate fell earlier in Western and Northwestern Europe than elsewhere,… that we have grown so old. P6
    85. Long life is altering our society, of course, but in experiential terms. P6
    86. Your account of what happened approximates to the real facts.
    87. His earnings are out of all proportion to his skill and ability.