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人类活动与地球的关系
添加时间:2016-10-30 22:19:23 浏览次数: 作者:未知
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  • While the past few centuries have witnessed increasingly better quality of human life, human activity is doing more and more harm to the Earth. Natural resources are being depleted1 and pollution is being created as a result of development of technology. Natural areas are being damaged as a result of urban expansion to populate more people.

    First, we harm the Earth by using more and more natural resources. If we fell too many trees at one time to build houses and make paper, or if we cut down trees before they grow to maturity2, they can hardly grow back in time. As worrisome as overcutting of trees is overfishing. With improved technology and greater drive for money, fish of all kinds are being over hunted, reducing the biomass of some fish to the verge3 of extinction4. Whaling seems a most irksome issue. While most countries argue against it, some countries go whaling to extremes. We often take it for granted that we have unlimited5 natural resources and use them in a wasteful6 manner, bringing about great losses.

    Second, we damage the Earth by producing pollution in all forms. Factories pollute water and the air. Vehicles pollute the air. Nuclear-related and electronic products are playing an increasingly big role in polluting the air, especially when we dispose of related waste carelessly. We take it for granted that Nature can help clean everything, but it cannot.

    Third, expanding towns and cities are taking up more and more land. As populations flood to cities, new house and stores have to be built to accommodate their needs. Land that was good for farming has now become factories and apartment buildings. We seem to take it for granted that we have unlimited land, but we do not.

    In summary, human activity seems to be going at the expense of the Earth in various ways. However, our survival depends on the Earth, including natural areas and natural resources, so we have to venerate7 the Earth.

     9级    英文科普 
     单词标签: depleted  maturity  verge  extinction  unlimited  wasteful  venerate 


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    1 depleted [dɪ'plɪtɪd] 31d93165da679292f22e5e2e5aa49a03   第8级
    adj. 枯竭的, 废弃的 动词deplete的过去式和过去分词
    参考例句:
    • Food supplies were severely depleted. 食物供应已严重不足。
    • Both teams were severely depleted by injuries. 两个队都因队员受伤而实力大减。
    2 maturity [məˈtʃʊərəti] 47nzh   第7级
    n.成熟;完成;(支票、债券等)到期
    参考例句:
    • These plants ought to reach maturity after five years. 这些植物五年后就该长成了。
    • This is the period at which the body attains maturity. 这是身体发育成熟的时期。
    3 verge [vɜ:dʒ] gUtzQ   第7级
    n.边,边缘;vi.接近,濒临
    参考例句:
    • The country's economy is on the verge of collapse. 国家的经济已到了崩溃的边缘。
    • She was on the verge of bursting into tears. 她快要哭出来了。
    4 extinction [ɪkˈstɪŋkʃn] sPwzP   第8级
    n.熄灭,消亡,消灭,灭绝,绝种
    参考例句:
    • The plant is now in danger of extinction. 这种植物现在有绝种的危险。
    • The island's way of life is doomed to extinction. 这个岛上的生活方式注定要消失。
    5 unlimited [ʌnˈlɪmɪtɪd] MKbzB   第8级
    adj.无限的,不受控制的,无条件的
    参考例句:
    • They flew over the unlimited reaches of the Arctic. 他们飞过了茫茫无边的北极上空。
    • There is no safety in unlimited technological hubris. 在技术方面自以为是会很危险。
    6 wasteful [ˈweɪstfl] ogdwu   第8级
    adj.(造成)浪费的,挥霍的
    参考例句:
    • It is a shame to be so wasteful. 这样浪费太可惜了。
    • Duties have been reassigned to avoid wasteful duplication of work. 为避免重复劳动浪费资源,任务已经重新分派。
    7 venerate [ˈvenəreɪt] VL4zv   第9级
    vt.尊敬,崇敬,崇拜
    参考例句:
    • They came to venerate him as a symbolic figure. 他们把他当作偶像来崇拜。
    • We were taught to venerate the glorious example of our heroes and martyrs. 我们受到教导要崇敬英雄、烈士的光辉榜样。

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