It is not so much the actual population of the world but its rate of increase which is important. It works out to be about 1. 6 per cent per annum net increase. In terms of numbers this means something like forty to fifty-five million additional people every year. Canada has a population of twenty million rather less than six months climb in the world population. Take Australia. There are ten million people in Australia. So, it, takes the world less than three months to add to itself a population which peoples that vast country. Let us take our own crowded countryEngland and Wales: forty-five to fifty million peoplejust about a years supply.
By this time tomorrow, and every day, there will be added to the earth about 120,000 extra peoplejust about the population of the city of York.
I am not talking about birth rate. This is net increase. To give you some idea of birth rate, look at the seconds hand of your watch. Every second three babies are born somewhere in the world. Another baby! Another baby! Another baby! You cannot speak quickly enough to keep pace with the birth rate.
This enormous increase of population will create immense problems. By A. D. 2000, unless something desperate happens, there will be as many as 7,000,000,000 people on the surface of this earth! So this is a problem which you are going to see in your lifetime.
Why is this enormous increase in population taking place? It is really due to the spread of the knowledge and the practice of what is coming to be called Death Control. You have heard of Birth Control? Death Control is something rather different. Death Control recognizes the work of the doctors and the nurses and the hospitals and the health services in keeping alive people who, a few years ago, would have died of some of the incredibly serious killing diseases, as they used to be. Squalid conditions, which we can remedy by an improved standard of living, caused a lot of disease and dirt. Medical examinations at school catch diseases early and ensure healthier school children. Scientists are at work stamping out malaria and other more deadly diseases. If you are seriously ill there is an ambulance to take you to a modern hospital. Medical care helps to keep people alive longer. We used to think seventy was a good age; now eighty, ninety, it may be, are coming to be recognized as a normal age for human beings. People are living longer because of the Death Control, and fewer children are dying, so the population of the world is shooting up.
如何准确把握GRE阅读主旨
GRE阅读高频机经原文及答案:舞蹈物理动作分析
GRE阅读理解常见结构须知
如何攻克GRE阅读中的专业术语
GRE阅读能力和技巧要结合
GRE阅读逻辑题目该怎么解
GRE阅读高频机经原文及试题:海底火山生物
GRE阅读遇到难词如何处理
GRE阅读理解常见结构
GRE阅读高频机经原文:Snowshoe hare population
GRE高分逻辑有哪些常见思维
GRE阅读高频机经原文及答案:Sea Cow
GRE经典阅读句式总结
GRE阅读高频机经原文及试题:蝙蝠的回声定位
GRE阅读备考哪些方法最有效
GRE阅读高频机经原文及答案:地球冷暖周期
GRE阅读平时有什么高效训练方法
怎样复习GRE阅读效果好
GRE阅读高频机经原文:寂静的春天
如何应对GRE阅读中的取非思想
GRE阅读如何进行快速定位
GRE阅读文章特征分析
GRE阅读背景材料之厄尔尼诺现象
GRE阅读备考你所需要了解哪些东西
GRE阅读中的虚拟语气如何处理
多了解国外知识有益于GRE阅读
GRE阅读考试四大应对方法
GRE阅读全方位特性盘点
GRE阅读难句题型分析
GRE阅读有哪些常见的类比思维
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |