首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Population Explosion A very important world problem is the increasing numbe...
Population Explosion A very important world problem is the increasing numbe...
admin
2020-12-24
42
问题
Population Explosion
A very important world problem is the increasing number of people who actually inhabit this planet. The limited amount of land and land resources will soon be unable to support the huge population if it continues to grow at its present rate.
So why is this huge increase in population taking place? It is really due to the spread of the knowledge and practice of what is becoming known as "Death Control". You have no doubt heard of the term "Birth Control". "Death Control" is something rather different. It recognizes the work of the doctors and scientists who now keep alive people who, not very long ago, would have died of a variety of then incurable diseases. Through a wide variety of technological innovations that include farming methods and the control of deadly diseases, we have found ways to reduce the rate at which we die. However, this success is the very cause of the greatest threat to mankind.
If we examine the amount of land available for this ever-increasing population, we begin to see the problem. If everyone on the planet had an equal share of land, we would each have about 50,000 square meters. This figure seems to be quite encouraging until we examine the amount of usable land we actually have. More than three-fifths of the world's land cannot produce food.
Obviously, with so little land to support us, we should be taking great care not to reduce it further. But we are not! Instead, we are consuming its "capital" -- its nonrenewable fossil fuels and other mineral deposits that took millions of years to form but which are now being destroyed in decades. We are also doing the same with other vital resources not usually thought of as being nonrenewable such as fertile soils, groundwater and the millions of other species that share the earth with us.
It is a very common belief that the problems of the population explosion are caused mainly by poor people living in poor countries who do not know enough to limit their reproduction. This is not true. The actual number of people in an area is not as important as the effect they have on nature. Developing countries do have an effect on their environment, but it is the populations of richer countries that have a far greater impact on the earth as a whole.
There isn't enough land to support human being because()
选项
A.most of the world's land is unusable.
B.there are more seas than land in the world.
C.the world's land has already been taken up.
D.the world's land is not distributed equally.
答案
A
解析
细节题。题干:没有足够的土地来支撑人类的生存,因为____。由题干关键词land 可以定位到第三段最后一句“约五分之三的土地是不能生产食物的”。由此可知,大部分的 土地资源是无法利用的。故答案为A。
转载请注明原文地址:https://ti.zuoweng.com/ti/uBdQKKKQ
相关试题推荐
Thehigh-speedtrainscanhaveamajorimpactonourlives.AeffortBproblemC
Itispossibletoapproachtheprobleminadifferentway.AraiseBposeCexper
GoingHerOwnWay Whenshewastwelve,Mariamadeherfirstimportantdecis...
GoingHerOwnWay Whenshewastwelve,Mariamadeherfirstimportantdecis...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
Itisimportantforfamiliestoobservetheirtraditionsevenastheirchildr...
Manyoftheproblemspresentedbythecountry'sgeographicalfeaturesfound...
随机试题
速凝剂的典型特点是可以使得混凝土迅速硬化。
下列()属于家庭收支预算中日常生活支出预算项目的内容。 A、家居装修支出预
判断小儿高血压的标准是
下列岩石中属于沉积岩中的化学和生物化学岩类的是: A.大理岩B.石灰岩C.花岗岩D.石英岩
打开(演示文稿素材4)下的文件exam4.pptx,并按要求完成以下操作: (1)第一张幻灯片中插入艺术字:“PowerPoint2010演示文稿”...
哲学的基本问题是( )A.社会与自然的关系问题B.思维与存在的关系问题C.政治与经济的关系问题D.理论与实践的关系问题
患者,女,53岁。下蹲或腹部用力时,出现不由自主的排尿,其正确的护理诊断是A.功能性尿失禁:与膀胱过度充盈有关B.功能性尿失禁:与腹压升高有关C.反射性尿失
服用后30分钟内不宜进食或饮水的是A.泡腾片B.舌下片C.咀嚼片D.缓释片E.分散片
有心律失常者慎用()A:过氧苯甲酰B:醋酸氢化可的松C:咪康唑D:林旦E:异维A酸
关于管道系统的压力试验,说法正确的有()。A.试验过程发现泄漏时,应由有资质的人员进行带压处理B.压力试验温度严禁接近金属材料的脆性转变温度C.脆性材料严