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托福IBT高分作文：人类行为对地球的影响

2015-05-12 17:00:54来源：网络

　　托福IBT高分作文：人类行为对地球的影响。新托福IBT考试中，作文是考生备考的重点与难点。托福IBT写作高分范文是练习托福写作的最佳素材。本文中新东方在线托福网为大家带来IBT高分作文写作思路分析及高分范文范例人类的行为对地球的影响。希望对同学们的托福备考有所帮助。

　　查看全部：新托福IBT高分作文|IBT高分范文

　　托福IBT高分作文：

　　Does human activity improve or damage the earth?

　　Some people believe that the Earth is being harmed (damaged) by human activity. Others feel that　human activity makes the Earth a better place to live. What is your opinion? Use specific reasons and　examples to support your answer.

　　托福IBT高分作文分析：

　　不要急于选择。两种观点都过于含混。Human activity指的是什么?

　　饮食起居：广东人把某种海豚(dolphin)吃得almost extinct;美国人养宠物鹦鹉(parrot)，导致南美洲很多稀有品种(rare species)濒临灭绝。

　　科学研究：好的例子很多，比如电的发明。不好的也很多，克隆(clone)技术、基因重组(gene engineering)技术，可能导致道德(moral value)的沦丧(deteriorated; ruined); 诺贝尔的发明(炸药explosive)究竟杀　了多少人?塑料袋(plastic bags)的发明，导致了多少white pollution?

　　战争：从来都是灾难。生化武器，比如炭疽病毒(anthrax)

　　结论：人类的行为对地球的影响，有好的，也有坏的。很难说哪一种更多。

　　托福IBT高分作文范文：人类的行为对地球的影响

　　The environment is usually changed to benefit human life. Cars and roads make transportation fast and easy,　factories make products that make our lives more comfortable, public services in cities like water treatment,　electricity, and waste disposal make our lives more convenient. All of these advances, however, come with a　significant environmental cost. Human activity does significant damage to the Earth.

　　One of the main effects of human activity on an area is water pollution. Dumping waste materials from　human activity into rivers and streams is popular because the waste seems to disappear downstream. The main　sources of water pollution are factory waste, oil and gas runoff from highways, and untreated human waste. When　this waste dumped into rivers, the water downstream becomes undrinkable and unusable for agriculture, and also　kills plant and animal life in the rivers.　Clean air and water is a prerequisite not only for human life, but also for all life on the planet. But air is now　being polluted by modern transportation, notably gas-powered automobiles, as well as electrical generators that　burn fossil fuels and pour polluting chemical waste into the air. This makes the air much less healthy to breathe.　The air-borne pollution also falls back to the earth in the form of acid rain, which destroys plant life and human　buildings.

　　Another serious long-term effect of air pollution is global warming. For the past several decades scientists　have noted a disturbing rise in the average temperature of the earth that caused by the rise of greenhouse gases, air　pollutants created by burning fossil fuels, in the atmosphere. Scientists believe that if humans continue to increase　the amount of greenhouse gases in the atmosphere, the temperature of the earth will continue to rise. Eventually,　this could melt the polar ice caps and cause devastating costal flooding all over the world. Major cities like Hong　Kong, Shanghai, and Dalian might be totally destroyed.

　　Therefore, I believe human activity has caused serious problems while it has improved the world in which　we live. It is time to realize this hazard and take action to prevent further disaster while making progress.

——本文转自新东方在线论坛

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本文关键字: IBT toeflIBT 托福高分作文 托福IBT高分

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