71. Some people think that the automobile has improved modern life. Others think that the automobile has caused serious problems. What is your opinion?

I once read in the Times that automobiles rank as one of the greatest human innovation of all time. Since their invention at the turn of the 20th century, automobiles have become an indispensable part of modern live and profoundly changed the modern society and the environment. The way I see it, despite the benefits and conveniences brought by automobiles, they have tremendous negative impacts on our lives and the environment. Automobiles emit a wide variety of pollutants, which cause serious problem, such as carbon monoxide, carbon dioxide and nitrogen oxides.

For starters, carbon monoxide gravely endangers people’s health, giving rise to various diseases and resulting in death.

Furthermore, carbon dioxide contributes to the global warming. The increased amounts of carbon dioxide in the atmosphere will increase the ability of the air to keep the Sun’s heat. As a result, the global temperatures will rise and lead to the melting of the polar ice and a rise in sea levels. Consequently, large parts of the Earth will be flooded by seawater.

In addition, nitrogen oxides result in acid rain, which can also damage the environment we are living in. Acid rain severely damages the local ecosystem, leading to the death of water plants and fish. Otherwise, historical buildings, for instance, the Forbidden City and Great Wall in China, have been damaged by acid rain. Most important, acid rain can endanger people’s health leading to various diseases.

Finally, particles jeopardize people’s health, giving rise to a wide variety of respiratory diseases, such as asthma.

All in all, automobile has lead to various problems, such as global warming, the acid rain, and endangering people’s health. These problems have inflicted heavy damages on the environment. If human beings fail to take the negative effects of their activity making use of automobile and take effective measures to resolve these problems, their survival will be at risk.

第二段最好进行充分的论述~否则换别的...

比如
For starters, carbon monoxide gravely endangers people’s health, giving rise to various diseases and resulting in death. As we all know, the increase amount of carbon monoxide in human's body will decline the ability of haemoglobin integreted with the oxygen element, result in hypochromia, which will definitely cause severe damge to people's health.


中间２～３个论点足够了，要的是more　spicific，而不是更多的surporting　viewpoint

同意楼上，楼主是不是不怎么喜欢用摸版啊？发现你之前的好象也是比较随性```

只是想把观点尽量写全,但是又不想写太多的字,看样子的改改了,呵呵,谢啦

第三段和第一段可以具体的放在一段吧,多扔两个疾病的词汇进去

是说举例的3段和1段