B MY opinion: In the passage, the conclusion needed support is that "any future recessions in Vargonia will probably not reduce the availability of teaching jobs at government-funded schools". The reason for it is: 1. Government-funded schools free of charge --- money issue; 2. Current student-teacher ratios not be exceeded --- students and teachers' number issue, R=S/T must be kept unchanged. In the light of the reasons, B exactly related the money issue and the number issue, by indicating that in time of recession, 25% of V children would go to public school because of money issue, and that this fact will lead to the flutuation of R=S/T. When S increases, the government will increase T in order to keep R in balance.
D, maybe it mentions the current situation of R=S/T, however, it's not related to "reason 1- free of charge, the moey issue". What's more, the current ratio of S and T can't garantee anything in the future when there is a recession.
[此贴子已经被作者于2008-6-19 10:40:51编辑过] |