上周我们分析了GMAT逻辑CR结论题题型，大家有没有掌握了呢？这周申友要给大家分析的是GMAT逻辑CR题型中的：评价题

【GMAT评价题是什么】

    GMAT评价题，又称evaluation题目或评估题。通常需要选出能够影响文章结论是否成立的选项。选项通常为whether/if引导的一般疑问句的陈述语句或特殊疑问句的陈述语句。

标志性词语：evaluate、assess、determine

【GMAT评价题解题思路】

    对句子取非，判断是否对结果产生影响。往往会对结果造成影响的选项就是正确选项。

【GMAT评价题解题技巧】

    1、模糊词、极端词都不选；但极端结论可以选模糊词；             

    2、对其答Yes或No对文章产生相反效果

GMAT例题1：OG13-P538-124

    Vargonia has just introduced a legal requirement that student-teacher ratios in government-funded schools not exceed a certain limit. All Vargonian children are entitled to education, free of charge, in these schools. When a recession occurs and average incomes fall, the number of children enrolled in government-funded schools tends to increase. Therefore, though most employment opportunities contract in economic recessions, getting a teaching job in Vargonia's government-funded schools will not be made more difficult by a recession.

    Which of the following would be most important to determine in order to evaluate the argument?

    (A)Whether in Vargonia there are any schools not funded by the government that offer children an education free of charge

    (B) Whether the number of qualified applicants for teaching positions in government-funded schools increases significantly during economic recesslons

    (C) What the current student-teacher ratio in Vargonia's government-funded schools is

    (D) What proportion of Vargonia's workers currently hold jobs as teachers in government-funded schools

    (E) Whether in the past a number of government funded schools in Vargonia have had student teacher ratios well in excess of the new limit.

GMAT解析：

     GMAT题干：V刚推出一个法规，要求在政府资助的学校中学生-老师的比例不超过某个限制。所有的V的孩子都有资格免费在这些学校学习。当经济出现衰退时，平均收入下降，入学政府资助孩子的数量有上升趋势。因此，尽量大部分就业机会在衰退时会减少，但是得到一个在政府资助学校教课的工作在衰退期并不会更加困难。

     GMAT题目：哪个评价对论证最重要。

     GMAT分析：前提是经济衰退时，政府资助的学校入学的孩子数量上升，结论是在经济衰退时，在政府资助学校教课的工作不会更加困难，答案应该围绕工作是否更加困难开展。

    A选项是否在V有不是政府资助的但免费让孩子接受教育的学校，无关。

    B选项是否有资格获得在政府资助学校教课的申请者数量在衰退期增加的非常多，若是肯定的回答，对文章是削弱，否定回答，对文章是加强作用，正确。

    C选项问师生比例，无关。

    D选项问老师占工人的比例，无关。

    E选项比例是否有超过限制，无关。

GMAT例题2：OG16-P533-100

    A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals that are toxic to most other plants. Agronomists studying the growth of this herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert. Hence, the herb’s high histidine production must be the key feature that allows it to grow in metal-rich soils.

    In evaluating the argument, it would be most important to determine which of the following?

    (A) Whether the herb can thrive in soil that does not have high concentrations of the toxic metals

    (B) Whether others of the closely related group of plants also produce histidine in large quantities

    (C) Whether the herb’s high level of histidine production is associated with an unusually low level of production of some other amino acid

    (D) Whether growing the herb in soil with high concentrations of the metals will, over time, reduce their concentrations in the soil

    (E) Whether the concentration of histidine in the growing herb declines as the plant approaches maturity

GMAT解析：某一种草药是一组可以在有害的高金属含量的土地当中生存的植物当中的一种，农学家研究发现，这种草药的生长产生了大量的H，一种氨基酸。试管实验证明，H这种物质可以使这些金属产生惰性。因此，草药产生的H这种物质一定是它在这种金属含量高的土地生长的的解决办法关键因素。

    下面哪一个可以成为评估这个结论的因素？

    A.这种草药是不是可以在没有这么高浓度的有害金属的土壤里面生存。无关选项

    B 其他相关植物是否也可以产生大量的H这种物质。正确，如果不可以，他们也可以在这种土壤中生存，说明能不能生存与H这种物质无关，反之，若也产生了，则与H这种物质有关。

    C H这种物质浓度的产量是否与其他某种氨基酸的产量异常低有关，无关选项

    D 生长在高浓度金属土壤中的草药是否会降低土壤中金属的浓度，说明这种草药可能会吸收这种金属，或者分解，但与H没有关系。不能影响结论。

    E 是否随着植物接近成熟，土地中H的浓度降低。无关选项。