Why are the numbers stacked against the potential college graduates？A. There are very few job opportunities that require higher education.B. Too many graduates want to help people and save the world.C. A lot of graduates only want to do the jobs in the world saving field.D. Too few students want to join the army or do a dead end job.

本题为细节理解题，考查学生根据原文细节选择正确答案的能力。解题核心在于定位原文中与问题相关的具体段落，并准确理解关键句的含义。题目问的是“为什么应届毕业生的就业机会‘数字’（数量）不利”，需重点关注原文中关于工作机会数量不足的描述。

关键句定位：根据题目提示，答案在第四段最后两句：

• “Their motive is to help people and save the world, but the numbers are stacked against them.”（动机虽好，但数量不利）
• “Not only are there not sufficient jobs in the world-saving fields, but in the current slowdown it has become evident that there never are enough promising jobs, presumably never will be, that require a higher education.”（不仅拯救世界的领域工作不足，且需要高等教育的好工作一直都不够）

选项分析：

1. A选项：正确。原文明确指出“要求高等教育的高薪工作数量不足”，与问题中的“数字不利”直接对应。
2. B选项：错误。虽然提到毕业生的动机是“帮助人、拯救世界”，但问题问的是“数字”原因，而非动机。
3. C选项：错误。原文强调“拯救世界领域的工作不足”，但未说毕业生“只愿做此类工作”，且问题核心是“数量不足”。
4. D选项：错误。原文未提及参军或“死胡同”工作的相关性，属于无关选项。