Aging Population
The world’s population is growing at a rate of a little more than 1% per year.
However, not all segments of the population are growing at the same rate.
ps: 然而，并不是所有的人口都在以同样的速度增长。
all所有; 全部; 全体; 一切; 全部的，整个的; 唯一的事物; 所有的事物; 完全; 很; 十分; 非常; 太; 过分
segments部分; 份; 片; 段; 瓣; 弓形; 圆缺; 分割; 划分; segment的第三人称单数和复数
population人口，人口数量; 某领域的生物; 族群; 人口
growing增加的; 增长的; 增强的; 扩大; 增加; 增强; 长大; 长高; 发育; 成长; 生长; grow的现在分词
same同一的; 相同的; 相同的，一模一样的; 同样的事物，相同的事物; 相同，一样; 同一个人; 同样
rate速度; 进度; 比率; 率; 价格; 费用; 评估; 评价; 估价; 认为…是好的; 看好; 划分
This graph shows that the rates of growth have 3 different groups, children, adults and the elderly.
ps:这张图表显示，生长速度有3个不同的群体，儿童，成人和老年人。
As you can see, while the population of children is fairly constant, the elderly population is increasing at the fastest rate.
ps: 正如你所看到的，虽然儿童人口相当稳定，但老年人口增长速度最快。
constant连续发生的; 不断的; 重复的; 不变的; 固定的; 恒定的; 常数; 常量
increasing增长，增多; 增加; increase的现在分词
fastest快; 快速; 迅速; 不久; 立即; 牢固地; 完全地; 快的; 迅速的; 敏捷的; 迅速发生的; 立即发生的; 动作迅速的; 头脑灵活的; fast的最高级
rate速度; 进度; 比率; 率; 价格; 费用; 评估; 评价; 估价; 认为
This is due to very low birth rates in developed country and birthrate declines in most developing countries.
ps: 这是因为发达国家的出生率很低，大多数发展中国家的出生率下降。
due to由于，应付
birth rates出生率(某地区每年每1 000人中的出生数目); birth rate的复数
birthrate出生率
declines减少; 下降; 衰弱; 衰退; 谢绝; 婉言拒绝; 变格，使发生词形变化; decline的第三人称单数
developing countries发展中国家
As a result of these trends, the world’s population is aging.
ps: 由于这些趋势，世界人口正在老龄化。
Exercises:
1. What does the graph show?
Different segments of the population are growing at different rates.
Between 2015 and 2050, the percentage of world’s population over 60 is expected to nearly double.
ps: 2015年至2050年间，世界60岁以上人口的比例预计将增加近一倍。
percentage百分率; 百分比; 利润的分成; 提成
world世界; 地球; 天下; 某地域的人类社会; 星球，天体
population人口，人口数量; 某领域的生物; 族群; 人口
over从直立位置向下和向外; 落下; 倒下; 从一侧到另一侧; 翻转; 穿过; 在…上面; 悬在…上面; 向…上方; 从一边到另一边; 穿越; 一轮投球
expected预料的; 预期的; 预料; 预期; 预计; 等待; 期待; 盼望; 要求; 指望; expect的过去分词和过去式
nearly几乎; 差不多; 将近
double两倍的; 加倍的; 双的; 成双的; 成对的; 供两者用的; 双人的; 双重地; 两倍
In 2015 there were 900 million people over 60; in 2050 the number should be around 2 billion.
Aging populations are becoming a huge problem in many countries, especially developing counties.
It used to be that many elderly people lived with their family and helped take care of the next generation.
ps: 过去，许多老人和家人住在一起，帮助照顾下一代。
They had a place to stay and people to help take care of them when they needed assistance.
ps: 他们有地方住，需要帮助时有人帮忙照顾他们。
Now however, many elderly people, or senior citizens, are left on their own.
ps: 然而，现在许多老年人，或者说老年人，都是自己一个人留下的。
This is partly the result of people having fewer children, and also because of the massive urbanization.
ps: 这在一定程度上是因为人们的孩子少了，也因为大规模的城市化。
partly一定程度上; 部分地
result后果; 结果; 胜利，胜局; 发生; 产生
people人; 人们; 大家; 人民，国民; 民族; 种族; 居住在; 把…挤满人; 住满居民; person的复数
having有; 持有; 占有; 由…组成; 显示出，带有; have的现在分词
childrenchild 的复数
because of因为，由于①because of是复合介词，其后可接名词、代词、动名词或由what引导的从句。②because of一般引导状语，不引导表语；但当主语是代词时，because of短语在句中可用作表语。
massive巨大的; 大而重的; 结实的; 非常严重的
urbanization城市化; 都市化
Young and middle-aged adults have left the rural areas for economic opportunities only available in large urban centers.
ps: 中青年人离开农村，只在大城市中心寻找经济机会。
adults成年人; 成年动物; adult的复数
left左边的; 左边; 左方; 左; 左边的第一条路; 左转弯; 离开; 离开居住地点; 遗弃; 丢弃; leave的过去分词和过去式; 向左; 在左边
rural areas农村地区
economic经济的; 经济上的; 经济学的; 有利可图的; 可赚钱的; 合算的
opportunities机会; 时机; opportunity的复数
urban城市的; 都市的; 城镇的
centers篮球中锋，中场手; 中心，中心区，中央，中枢，核心，中间派，中心站
As a result, there is no one to care for the elderly who are left behind to live on their own.
This is especially true in developing countries.
Exercises:
1. Massive urbanization means people moving from rural to urban areas.
2. Young and middle-aged adults have left the rural areas for economic opportunities only available in large urban centers.
Repeat & Read Sentences:
1. As a result of these trends, the world’s population is aging.
2. Now however, many elderly people, or senior citizens, are left on their own.
3. Massive urbanization occurs when many people move from rural areas to large urban centers.
4. Fewer elderly people are being cared for by their families.
With an aging population, health problems become a growing concern.
Some of the leading conditions that accompany aging include vision problems, hearing loss, diabetes and dementias such as Alzheimer's disease.
ps: 伴随着年龄增长的一些主要疾病包括视力问题、听力损失、糖尿病和痴呆症，如老年痴呆症。
leading最重要的; 一流的; 领先的，最前的; 行距; 带路; 领路; 引领; 相连，相通; 通向; 通往; lead的现在分词
accompany陪同; 陪伴; 伴随; 与…同时发生; 为…伴奏
aging变老; 变旧; 老化; 变老的; 变旧的; 老化的; 使显老; 使变老; 使苍老; 成熟，变陈; age的现在分词
hearing loss听力丧失
diabetes糖尿病; 多尿症 英 [ˌdaɪəˈbiːtiːz] 美 [ˌdaɪəˈbiːtiːz]
dementias痴呆; 精神错乱; dementia的复数 英 [dɪˈmɛnʃɪəz] 美 [dɪˈmɛnʃiəz]
such as例如; 像; 象…这样; 诸如…之类
disease病; 疾病; 弊端; 恶疾; 痼疾
These problems can lead to disabilities that make it difficult to live without assistance.
ps: 这些问题可能会导致残疾，使没有援助的人很难生活。
disabilities缺陷，障碍; 缺陷; disability的复数
make it到达; 及时赶上参加; 成功
live without在没有…的情况下生活；少…也可以生活
assistance帮助; 援助; 支持
With diseases such as Alzheimer's, people lose their memory and are unable to recognize their own children.
Worldwide, more than 46% of people aged 60 and over have disabilities.
ps:在世界范围内，超过46%的60岁及以上的人有残疾。
Worldwide影响全世界的; 世界各地的; 遍及全球地
more than比…更;比…更重要; 超出需要;超乎寻常
people人; 人们; 大家; 人民，国民; 民族; 种族; 居住在; 把…挤满人; 住满居民; person的复数
aged…岁; 年迈的; 老人; 变老; 使显老; 使变老; 使苍老; 成熟，变陈; age的过去分词和过去式
over从直立位置向下和向外; 落下; 倒下; 从一侧到另一侧; 翻转; 穿过; 在…上面; 悬在…上面; 向…上方; 从一边到另一边; 穿越; 一轮投球
have有; 持有; 占有; 由…组成; 显示出，带有; 与过去分词连用构成完成时
disabilities缺陷，障碍; 缺陷; disability的复数
Getting meals and medical care, for example, becomes both expensive and difficult.
As a result, the cost of providing services to the sick and disabled can become a huge problem.
Exercises:
1.A disabled person is someone who generally needs assistance to live.
2.What is an example of disability?
Memory loss is one example of disability.
Repeat & Read Sentences:
1. The cost of providing services to the sick and disabled can become a huge problem.
2. A disabled person is someone who generally needs some kind of living assistance.
3. Elderly people are often referred to as senior citizens.
4. With an aging population there will be more sick and disabled people to care for.
5.Some of the leading conditions that accompany aging include vision problems, hearing loss, diabetes and dementias such as Alzheimer's disease.
6.It used to be that many elderly people lived with their family and helped take care of the next generation.
