一篇argument 求各种拍 谢谢！！！！

frozenfire727UID: 3004905

TOPIC: ARGUMENT193 - The Department of Education in the state of Attra recommends that high school students be assigned homework every day. Yet a recent statewide survey of high school math and science teachers calls the usefulness of daily homework into question. In the district of Sanlee, 86 percent of the teachers reported assigning homework three to five times a week, whereas in the district of Marlee, less than 25 percent of the teachers reported assigning homework three to five times a week. Yet the students in Marlee earn better grades overall and are less likely to be required to repeat a year of school than are the students in Sanlee. Therefore, all teachers in our high schools should assign homework no more than twice a week, if at all.
WORDS: 538 TIME: 00:29:36 DATE: 2011/2/6 20:31:21

  At first glance, the author's reasoning seems appealing and convincing. He advocates that all teachers in high schools in the state of Attra should assign homework no more than twice a week, if at all. To justify this assertion, the author cites the fact that high school students in the district of Marlee are assigned less homework while they got better grades than the students in the district of Sanlee. Close scrutiny of each of these facts, however, has revealed that none of them could lend credible support to the assertion.
  In the first place, the threshold assumption upon which the argument relies on is that the survey is statistically reliable. In order to establish a strong correlation between the amount of homework and the grades of students, the sample of the survey is supposed to be representative of the overall high students in the whole state of Attra. However, the author has conducted the survey only in two districts. It's entirely possible that the high school students in Marlee cannot stand for the other students. Without evidence of the survey's reliability, the author cannot draw the justifiably conclusion that all schools in the state should set the schools in Marlee as examples.
  In the second place, even if the sample of the survey is representative, there is another flaw that would weaken the line of reasoning. The survey is conducted among the high school math and science teachers, while the assertion that the author has provided in the end is about all high school teachers. The author fails to see the differences between different subjects. There is a great chance that it's not necessary for the math and science teachers to assign much homework to the students. But this experience may not apply to teachers in other subjects, such as arts, literature and so forth. Without taking the differences between subjects into consideration, the author draws the conclusion so hazily that it's unpersuasive.
  In the third place, better grades of students in the district of Marlee may not lead from the smaller amount of homework, but something else. As it's known to all, the grade is a complex factor effected not only by one thing. It's possible that what the teachers in Marlee give to the students is much easier to understand than that in Sanlee. It's also possible that most of teachers in Sanlee are more serious about the test and it's harder for their students to get a grade as high as the students in Marlee could make. Therefore, since the author has not ruled out all of these factors that make contributions to the grades, I cannot agree to the assertion based on the incomplete comparison.
  To sum up, the author's argument relies on certain doubtful assumptions and an incomplete comparison. To bolster the advocate, the author is supposed to conduct a new survey to make sure the sample is representative and take other factors that have influences on the grades into consideration.

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