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题库 / GMATLA-CR-55
In general, jobs are harder to get in times of economic recession because many businesses cut back operations. However, any future recessions in Vargonia will probably not reduce the availability of teaching jobs at government-funded schools. This is because Vargonia has just introduced a legal requirement that education in government-funded schools be available, free of charge, to all Vargonian children regardless of the state of the economy, and that current student-teacher ratios not be exceeded.
Which of the following, if true, most strengthens the argument?
The current student-teacher ratio at Vargonia's government-funded schools is higher than it was during the most recent period of economic recession.
During recent periods when the Vargonian economy has been strong, almost 25 percent of Vargonian children have attended privately funded schools, many of which charge substantial fees.
Nearly 20 percent more teachers are currently employed in Vargonia's government-funded schools than had been employed in those schools in the period before the last economic recession.
Teachers in Vargonia's government-funded schools are well paid relative to teachers in most privately funded schools in Vargonia, many of which rely heavily on part-time teachers.
During the last economic recession in Vargonia, the government permanently closed a number of the schools that it had funded.
这题先说了结论：经历未来萧条， Vargonia的老师也不会减少。然后给出了原因：1是给学生免学费，2是保持不变的学生与老师之比
现在问如何支持这个结论？就是为什么经济萧条了，照题目第一句话来说老师应该不好找工作，为什么老师这么好找工作？
我们看原因，第一个原因显然对于老师多少没有啥关系，所以关注第二个原因，既然要保持 学生：老师=常数，那么此时老师这个分母是只会多不会少，那么显然学生这个分子也要不变或增长，再看选项只有B涉及到了学生的数量，而C还是在描述老师数量，这对于得出结论没有帮助
Choice B assumes that people won't have enough money to go to the private schools. that's tricky
The explanatin provided by those who picked C is incorrect. Past experience most of the time cannot be used to predict future event unless there is a direct corelation. In this case, the teaching positions are more than before is far from enough to say that the same pattern will repeat in the future. For example, can we say: It rains a lot last year. So it will rain a lot this year. No!
B：那么经济不好的年份，大家没有钱去私立学校，就只能去公立学校了，那么学生多了，ratio不变，老师也要多才行