一直想问这道题！

In general,jobs are harder to get intimes of economic recession because many business 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 a 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 strengthensthe argument?

a. the current student-teacher ratio at Vargonia's government-funded schools is higher than is was during the most recent period of economic recession.

b.during recent periods when the Varginian economy has been strong,almost 25% of Vargonian children have attended privately funded schools,many of which charge substantial fees.

c.nearly 20% percent more teachers are currently employed in Vargonia's government-funded schools than had been employed in those schools in the period of before the last economic recession.

d.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.

e.during tha last economic recessions in Vargonia,the government permanently closed a number of the schools that it had funded.

答案是b,我自己选了半天觉得没有一个选项是正确的。。。b 我怎么觉得是无关呢，它到底在哪里加强了原文？

以下是引用成为在2006-8-24 12:44:00的发言：

In general,jobs are harder to get intimes of economic recession because many business 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 a 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 strengthensthe argument?

a. the current student-teacher ratio at Vargonia's government-funded schools is higher than is was during the most recent period of economic recession.

b.during recent periods when the Varginian economy has been strong,almost 25% of Vargonian children have attended privately funded schools,many of which charge substantial fees.

c.nearly 20% percent more teachers are currently employed in Vargonia's government-funded schools than had been employed in those schools in the period of before the last economic recession.

d.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.

e.during tha last economic recessions in Vargonia,the government permanently closed a number of the schools that it had funded.

答案是b,我自己选了半天觉得没有一个选项是正确的。。。b 我怎么觉得是无关呢，它到底在哪里加强了原文？

我个人感觉B不对，和题干没什么逻辑关系。应该是无关。

我觉得应该选A，首先题干说，教师工作还有空缺，而且现在学生-老师比例，还没有达到极限的数字。A说现在学生-老师比例比上一个经济衰退期还要高，近一步说明现在学生多，老师少，需要招老师。

b明显是错误的。

文章主要的观点是经济衰退不会减少公立学校的教师的工作

c项用经济衰退前和衰退后教师人数的变化似乎可以支持以上观点。

怎么净是些恶心题：B

结论是：萧条的时候老师不会少

C：现在比萧条时期老师少，即说明一个情况，如果从现在变成萧条的话，教师数量减少，不能加强结论。

B：现在有25％的学生在学费颇高的私立学校，如果先子变萧条的话，这些学生会因为无力支持学费，公立学校的生源变相增加，这样老师不能少，只能多，因为不能违反法律，学生－老师的数值不能过度。，萧条的话，分子－－学生数增加

A：现在的学生－老师的数值比例高，即萧条的时候低。但是这个比例有两个影响因素，不确定了。分子小的程度比分母大的话，萧条时候还是低，但是分母小了就不能加强上述结论了。

我觉得A的算法是有问题的，首先，A说现在（经济好）的学生老师比例比经济萧条的时候还要高，即萧条的时候低。假定老师数量不变的话，经济萧条学生变多，比例应该变得更高，而不是更低。只有老师数量也进行增加的话，才有可能降低比例，使萧条的时候比例低。所以A推出来老师数量会增加，支持就业结论。但是我这里有一个前提，就是假设经济萧条的时候学生数量会增加或者不变。如果经济萧条学生减少，就不一定了。

B，现在有25％的学生在学费颇高的私立学校，如果先子变萧条的话，这些学生会因为无力支持学费。公立学校的生源变相增加。这个没错，但怎么能推出来生源增加，比例就会超呢？题干说现在没有超，但没说增加了多少学生就会超。有可能数字现在离法律要求很远。

总之这道题出得太恶心了。

大家要读懂文中最后一句话， 就知道B为什么对了。

and that current student-teacher ratios not be exceeded--现在的学生VS老师的比例不能被超过。
B 经济萧条，公立学校学生最起码不会减少--》老师也是

之前的比例，老师的多少都是无关的。

其实这道题分析明白了以后非常简单，答案也很好理解，可能这个类型具有一些典型的难题，应该分析清楚。

题目的前提是两组数字之间变化的关系，这道题是学生的数字和老师的数字关系，也就是设定了一个分数，这道题是公有学校的师生比例。然后给定了一个条件，描述了这两组数字未来可能发生的变化，也就是分数可能发生的变化，这道题是给了分数值不能变高。然后题目开始出另一个推理的条件，这道题是老师的数量要增加，也就是分母要增加，如果要保持数值要保持不变，只能从分子下手。

答案就是一切有可能让分子也就是学生数量增加的选项，这道题是因为经济萧条更多的学生选择了公立学校，注意这个结论也是进一步推理才得出的结果。如果这道题能分析明白，相信以后遇到这类的题，可以很快找到答案。

此外，这道题的题干和答案描绘的都很隐晦，增加了阅读理解的困难，也是难题的典型特征。