恳寻高手帮我看下我第一篇Argument存在哪些不足！感激不尽！！

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Q240

"To serve the housing needs of our students, Buckingham College should build a new dormitory. Buckingham's enrollment is growing and, based on current trends, should double over the next fifty years, thus making existing dormitories inadequate. Moreover, the average rent for an apartment in our town has increased in recent years. Consequently, students will find it increasingly difficult to afford off-campus housing. Finally, an attractive new dormitory would make prospective students more likely to enroll at Buckinghm."

The dean of this college concludes that Buckingham College should build a new dormitory in order to meet the needs of students.To justify this assertion the dean points out that the enrollment of this college is growing, and based on this current, the numbers of students study at this school will double over next fifty years. The dean also cites a
fact that the average rent in the town has increased which lead to few students could afford to live off campus. What's more, the dean believes that a attractive new dormitory would make students more likely to enroll at this college. However, carefully scrutinized, the dean depends on a series of unconfirm suppositions to draw this conclusion, and therefore it is untenable.

First of all, the dean assumes that the student's enrollment will continuously grow in the future, which could be doubled as compared with preset, therefore the dormitary can not satisify the needs of students. However, there has not any evidence provided to support that this trend will continue and the numbers of students to enroll in this college will remain increasing. Perhaps this trend will revert and the numbers of students will decreas, which turns the assumption to be unwarranted.

Secondly, the dean offers no evidence to substantiate this conclusion that a attractive new dormitary is the primary consideration of students to choose a school. Common sense tells me that a school's reputation, it's ranking ,it's location as well as the quality of teaching are the fundamental factors determining the choices of students. Basically, it's unreasonable to infer that a dormitary plays a key role in attracting students to enroll.

Thirdly, even if a dormitary is vital for Buckingham College in the enrollment, the dean's assertion that few students can afford the price of renting in this town as the average rent has increasing is dubious. It's entirely possible that the whole town's economy has growed which accompanys the increasing expenditure of all aspects of life, including the tuition and payment of living on campus for students, therefore they would probablely prefer to live off campus.

Finaly, the dean assumes too hastily that building a new dormitary is necessary since no sufficient information that present dorimtaries can not meet the needs of students has provided to support this assertion. Without ruling out this possiblity, the dean of this college can not convince me a newly built dormitary is a necessity.

To sum up, the conclusion of the dean that it's necessary to build a new dormitary is unpersuasive and indefensible as it stands. To buttress this conclusion, the dean must show me that the current trend for enrollment will not change in the future, and must lend credity to this idea that dormitary is the crucial factor of attracting students. To better assess this conclusion, I would need to know more information about whether students could afford to rent a an apartment, or whether it is indeed necessary to build a new dormitary.