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.
SAT阅读文章类型介绍
SAT阅读考试的答题顺序解析
四种SAT阅读考试常见题型分析
SAT阅读高分攻略:抓住文章核心思想
SAT填空题练习题精选
SAT阅读常见技巧之排除法
SAT阅读高分技巧:突破三大难点
SAT阅读高分技巧:明喻和暗喻两种修辞
SAT填空题是如何考察逻辑关系的
SAT文章阅读答题关键词小结
SAT填空题出题方式介绍
SAT填空题满分要求及答题技巧
SAT阅读考试高分宝典
SAT填空题答题过程解析
如何解决SAT阅读"读不懂"问题
两原则解答SAT填空题 提高速度和效率
SAT阅读生词的破解方法
SAT阅读考试四大备考重点
SAT阅读三大出题方法
SAT文章阅读修辞手法举例
攻克SAT阅读五阶段
SAT填空题高频词汇与答题技巧
SAT填空解题题干规律
SAT阅读材料:Trauma Teddies
SAT阅读答题三大技巧总结
SAT阅读文章练习:Weddell seal
SAT阅读主旨题和细节题答题技巧
SAT填空题四类逻辑结构总结
如何提高SAT文章阅读速度?
SAT阅读8道填空练习题精选
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |