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托福写作科技进步类论证素材(一)

2017-09-25 18:01:23来源：网络

　　3 汽车尾气对于人体有健康隐患

　　段落大意：汽车尾气所含危害人体健康成分，会对人体健康造成很大伤害。

　　Cars release 30 percent of the carbon dioxide in the earth's air. Carbon dioxide is released from the tailpipe of a car and can do much damage to the human respiratory system. Every time an automobile burns a gallon of gasoline it releases 22 pounds of carbon dioxide. Carbon monoxide is also a damaging greenhouse gas. Cars account for 76 percent of the carbon monoxide in the earth's air.

　　二 汽车的益处

　　1 汽车给出行带来便利

　　段落大意：汽车为人们的交通出行提供了便利条件。

　　Transportation plays a very important role in America. The automobile is the main form of transportation in America, connecting people from point 'A' to point 'B'. America is covered with roads that transport cars and people could across such areas from the islands of the Florida Key's to under the mountains of the Colorado Rockies. Cars offer fast reliable transportation, offering drivers access to anywhere with roads.

　　2 政府应该鼓励公共交通发展

　　段落大意：政府应该鼓励公共交通事业的发展。

　　Cars might be seen as a fast and free way to travel, but at whose expense. There are solutions to fix this problem, Americans can support mass transit, electric sources of transportation, or choose other forms of transportation that do not harm the environment. One day in the future we will laugh at how we would stand around and admire the deep hum of a car’s tailpipe. Not caring about

　　how the emissions released damaged our lungs, and environment. Massive change must be addressed, reducing the amount of driving time around America. This would benefit every citizen and generations to come. The creation of the automobile has dug America a deep hole. This hole can not be filled in or hidden up. This hole can and will endanger human’s life in the near future.

　　However America can choose to stop digging this hole, we can choose to select alternatives. In hope that Mother Nature can one day replenish its goodness to the way it was meant to be.

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本文关键字: 托福写作科技进步类论证素材 托福写作素材

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