求教下Argument61~预算电脑那道~~事实？让步？

MaydaysjUID: 2805242

TOPIC: ARGUMENT61 - The following appeared in a report by the.

"Nationally, the average ratio of computers to students in kindergarten through grade 12 (K-12) is 1:5. Educators indicate that this is very good ratio. This means that across the country, all students have access to and can use computers daily in their classrooms./ In Eyleria's K-12 schools, the ratio of computers to students is 1:7. This number is sufficient to ensure that all of Eyleria's students, by the time they graduate from high school, will be fully proficient in the use of computer technology. /Thus, there is no reason to spend any of the schools' budget on computers or other technology in the next few years."

我的提纲
1.       1全国1:5 推出每个学生白天都可在教室用电脑不可信。地区分布不均匀（贫困地区数量不足），年纪拥有电脑比例，课程设置不知道（可能高年级才有电脑课，才能用）。

2.       2地方的1:7 推出数量足够毕业熟练掌握不可信。1:7低于1:5不一定是合理的，数量不一定够。数量够了也不一定能熟练掌握，课程时间，师资力量，学生努力程度都有影响。

3.       3即使现在数量够了，学校还可能扩招，设备要更新，技术要更新，还是要花钱。


    我的问题
   1全国的那个是作为事实陈述还是个推论，可不可以批？
   2它与后面的那个推论有什么联系？并列递进？（我就看出来个1:7<1:5,而且感觉这个点很无力，说比例低了一点数量就不够了）
3  3.它和结论的预算有什么相关？
（看了专项里就这道题讨论让步的帖子，把思路改成这了，但还是有如上问题，请教大家）


   谢谢！O(∩_∩)O谢谢~~路过的给解答下撒~~


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