ARGUMENT71 正在努力摆脱摸板中,还不是很成功啊

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TOPIC: ARGUMENT71 - Copper occurs in nature mixed with other minerals and valuable metals in ore, and the proportion of copper in the ore can vary considerably. Until fairly recently, the only way to extract pure copper from ore was by using a process that requires large amounts of electric energy, especially if the proportion of copper in the ore is low. New copper-extracting technologies can use up to 40 percent less electricity than the older method to process the same amount of raw ore, especially when the proportion of copper in the ore is high. Therefore, we can expect the amount of electricity used by the copper-extraction industry to decline significantly.
WORDS: 398          TIME: 上午 12:27:25          DATE: 2006-7-14
1 关于新技术在处理同等数量的原矿石比老的方法省电，但是这个说的是在处理同样的矿石的时候，如果新的技术虽然处理同等的能省电，但是产量下降了，生产同等的铜要用的矿石和时间更多的话，也不一定是真的省电。

2 新技术可能存在其他问题，步骤烦琐，尽管在用电上节省了，但是花的时间长了，或者需要的人力增多，或者是更换新仪器的费用过高，企业不太愿意去更换，这样的话，这种机器不能够普及，那作者也别想依赖它去节省电力。


3 即使这种技术确实被广泛采用了，也不一定就真的用点节省了，有可能这个地区的矿多是低含量的，题目也说这种在高含量时作用才明显的不是？？另外如果这种仪器被大规模使用，它的效率好，所以产量变多，到时候电反而增加也不一定。

The author's expectation in this argument is that of using new copper-extracting technologies which can save 40 percent electricity when it processes the same amount of raw ore in attempt to decline the amount of electricity used by the copper-extraction industry significantly. Unfortunately, his expectation would be necessarily to be realized.

To begin with, the author fails to substantiate that these new technologies can really save electricity. We are only informed that this method can save 40 percent electricity when processing the same amount raw ore compared with the old ones, but how about the productivity of new technologies? When we ask the question that producing the same amount copper, how much electricity will be saved with new technologies compared to the old ones. The common sense and experience tells us the answer is uncertain. Thus, we have good reason to doubt this method is not really effective in saving electricity.

In the second place, even assuming that this kind of method can actually save electricity as the author suggests, there are also other problems which would hamper its wide use. For example, new technologies absolutely need new apparatuses to substitute those old ones, if the expenses are too dear, the mineral owners would probably continue to use the old machines. What is more, even the machines of new technologies are not expensive, when processing raw ore, their course is complicated, or needs more labor forces, the mineral owner may also reluctant to substitute their old machines.

Final and not least, given that new technology is wide used, it does not necessarily the case that it will reduce the amount of electricity used by the copper-extraction industry. Consider new technologies can save electricity, it means that it can reduce the cost of producing copper, which would in turn spawn industry of copper, thus the amount of electricity may possible not reduce, rather increase due to more amount of copper produced. Furthermore, the author fails to consider whether the new method can cause environmental pollution. If so, not very long, the government would forbid the use of this method.

TO sum up, the author only considers the advantages of new technologies, which is insufficient evidence to support to realize the situation he suggests. Only if the author can provide concrete evidence that new method can save electricity, and other pragmatic aspects of put new technologies into practice, he would make us believe that his expectation would really be realized sometime in the future.