Argument71 第一篇，希望大家多多指教

sophieywUID: 172230

用了将近两个小时，请大家多多指教，谢谢
The amount of electricity used by the copper-extraction industry, the arguer claims, would decline significantly by using the new copper-extracting technologies which need up to 40 percent less electricity than the older method to process the same amount of raw ore, especially when the proportion of copper is high. The reasoning seems to be logical, it, however, is groundless in deep analysis.

There are no sufficient evidences to ensure that the new technologies are superior to the older method in saving electricity. The arguer fails to provide information about the purity of the copper extracted by the two methods. It is possible that the copper purity of the new method is only half that of the old one. In this case, saving 40% electricity does not make any sense since part of copper in the ore is missed and the copper of poor purity might be useless in reality. Besides, the various proportion of copper in the ore is also of importance when we evaluate the effectiveness of an extracting method. Does the new method attain the same effect when processing the ore with different proportion of copper? There is no positive answer to this question. It might consume more electricity than the old method if the proportion of copper in the ore is lower than a certain value. Then, the advantage may disappear when the copper proportion of the ore is commonly low.

The wide application of the new method in the copper-extraction industry is still in doubt. It might be just an experimental method in the lab which provides ideal physical and chemical environments for the whole extracting process. There is still a long way to apply it to the practical producing flow. Another possibility is that the new method may require dedicate devices and high-technological support, which is beyond the economical and technological endurance of most copper-extraction factories. Therefore, it is unreasonable to expect a declination in the amount of electricity used by extracting copper when the spread of the new method is not guaranteed.

Another fault the arguer commits is that he/she fails to consider other factors that influence the consumption of electricity. Even if the new method indeed surpasses the old one no matter which kind of ore is processed and it can be widely used in the industry, it cannot absolutely lead to the conclusion that the amount of electricity used in the copper-extraction industry is to diminish. It is probable that the demand to the copper is greatly increased after the new method is adopted, or other procedures in the copper-extraction industry use more electricity, thus, the total consumption of electricity might increase correspondingly.

In sum, the declination in the amount of electricity cannot be expected unless the argument provides sufficient and substantial information showing that the new method does exceed in saving electric energy and can be widely used in the practical world and there is no sharp increase in the demand to the copper.

wp123UID: 2187508

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sophieywUID: 172230

谢谢鼓励，请大家多指出些不足之处