31 Society should make efforts to save endangered species only if the potential extinction of those species is the result of human activities.

　　社会应该努力拯救濒危物种，只要这些物种的灭绝是人类活动的结果。

　　32 College students should base their choice of a field of study on the availability of jobs in that field.

　　大学生应该选择那些就业前景好的研究领域。

　　33 As we acquire more knowledge, things do not become more comprehensible, but more complex and mysterious.

　　当人们获得越来越多的知识时，事情非但没有变得更加透彻，反而更加复杂神秘。

　　34 In any situation, progress requires discussion among people who have contrasting points of view.

　　在任何情况下，持有不同意见的人讨论过程中才会有进步。

　　35 Educational institutions should dissuade students from pursuing fields of study in which they are unlikely to succeed.

　　教育机构有责任劝阻学生不要从事不太可能成功的科学研究。

　　36 Governments should not fund any scientific research whose consequences are unclear.

　　政府不应该资助任何后果不明的科学研究。

　　37 Society should identify those children who have special talents and provide training for them at an early age to develop their talents.

　　社会应该甄别那些天资聪颖的孩子，并且年幼的时候就开始提供训练培养它们的才能。

　　38 It is primarily through our identification with social groups that we define ourselves.

　　我们主要通过认同社会群体来定位自己。

　　39 College students should be encouraged to pursue subjects that interest them rather than the courses that seem most likely to lead to jobs.

　　应该鼓励大学生选择自己感兴趣的课程，而不是那些容易找到工作的课程。

　　40 Claim: When planning courses, educators should take into account the interests and suggestions of their students.

　　Reason: Students are more motivated to learn when they are interested in what they are studying.

　　结论：在编制教学课程时，教育工作者应该考虑学生的兴趣和建议。

　　原因：当学生对所学的内容感兴趣时，他们学习的动力更强。

　　41 The greatness of individuals can be decided only by those who live after them, not by their contemporaries.

　　个人的伟大是由后来人评判，不是由同时代的人来评判。

　　42 Students should always question what they are taught instead of accepting it passively.

　　学生应该质疑所学的知识，而不是被动的接受。

　　43 The increasingly rapid pace of life today causes more problems than it solves.

　　如今节奏日益加快的生活解决的问题，远不及带来的麻烦。

　　44 Claim: It is no longer possible for a society to regard any living man or woman as a hero.

　　Reason: The reputation of anyone who is subjected to media scrutiny will eventually be diminished.

　　结论：当今任何社会已经不再可能将任何在世的人标榜为英雄人物。

　　原因：任何人遭受媒体的监察，必定会声名扫地。

　　45 Competition for high grades seriously limits the quality of learning at all levels of education.

　　追求高分数严重地限制各阶段的学习质量。

　　46 Universities should require every student to take a variety of courses outside the student's field of study.

　　大学应该要求每个学生选修自己专业以外的各种学科。

　　47 Educators should find out what students want included in the curriculum and then offer it to them.

　　教育工作者应该发掘学生对课程的需求，并满足他们。

　　48 Educators should teach facts only after their students have studied the ideas, trends, and concepts that help explain those facts.

　　学生应该先学习有助于解释知识的理念、趋势和概念后，教育工作者再教学生知识。

　　49 Claim: We can usually learn much more from people whose views we share than from those whose views contradict our own.

　　Reason: Disagreement can cause stress and inhibit learning.

　　结论：相比意见不同的人来说，通常，我们从意见相同的人那里学的更多。

　　原因：意见不统一会导致压力，阻碍学习。

　　50 Government officials should rely on their own judgment rather than unquestioningly carry out the will of the people they serve.

　　政府官员应该依靠自己的判断做决定，而不是不假思索地遵从大众

　　应该鼓励年轻人追寻长期的、现实的目标，而不是寻的意愿。