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终于有勇气修改了,参考了fengboallan的宝贵意见
字数上去了,但是考场没有时间这样改啊 546字
At first glance, the arguer presents a sound conclusion that Luxess is truly effective in improving the condition of facial skin. However, a complete analysis impels us to draw some other explanations of the given evidences on which the statement bases.
To begin with, the author fails to give any information of the volunteers such as the district they live in, the age structure they belong to, and gender proportion of them. In common sense, all the factors might influence the result. For example, face condition of men is different from that of women, the old are different with the young in face condition as well, and living condition could also impact on the result. Furthermore, I can not see any evidence to illustrate that the experiment was conducted with the random sampling principle which is essential to a scientific and persuasive research. What is worse is that there is not any reference of the volunteers' number participated in this survey, so we have good reason to suspect whether the group is enough, in order to make a senseful analysis. If the study is unwarranted, how can we make a significant answer from it?
In addition, we can not deny the possibility that the volunteers may incline to report a positive result to the company before we understand the relationship between volunteers and company. Maybe, the product is offered for free so its users feel that they appreciate the company or the volunteers are the own employees of this company. All the possibilities tend to an overestimated value of Luxess face cream. Even if volunteers are neutral and impartial about the result, it cannot convince us because the reports of the volunteers in the end are too obscure and vague to draw any conclusion. We can hardly carry out a standard or criteria to determine the marked level which should be distinctive and precise. We must acknowledge that perhaps a hundred peoples have a hundred standards which result in the conclusion could not maintain persuasive. Before an uniform standard are clarified, we have to doubt about the result
Last but not least, even if the survey is valid, the real cause result in the improvement is uncertain because the author fails to exclude possible effects of soft soap which may play an important role in the improvement. According to scientific common sense, soft soap does help to clean faces alone in consequence with improving skin condition. Even if effect of soft soap can be neglected a month may be too short a time to decide the future effect of Luxess face cream. As we know, we should need a long-term evaluation of a cosmetic product before we can safely claim it is helpful. Perhaps the product tested is effective in a short period, but can not ameliorate the long-term face condition and even possibly aggravate the present problems.
In sum, as the above discussions, the argument has so many patent flaws that it needs more information to support the statement. First of all, the arguer should provide more detailed information of the survey and persuade us to believe this survey’s credibility, moreover rule out the possible effect of the soft soap. To better evaluate the research, the author should give the long-term effect about the product. |
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