97．Each departmental program consists, in part, of a grouping of subjects in the department’s areas of professional interest and, in part, of additional opportunities for students of their choice.

　　98．Alternatively, a student may use elective time to prepare for advanced study in some professional field, such as medicine or law, for graduate study in some area in which M. I. T. gives no undergraduate degree, such as meteorology or psychology, or for advanced study in an interdisciplinary field, such as astrophysics, communication science, or energy.

　　99．While the undergraduate curriculum for an open Bachelor of Science degree, as listed by a department, may have its own unique features, each program must be laid out in consultation with a departmental representative to assure that it is meaningful in structure and challenging in content.

　　100．Where previously it had concentrated on the big infrastructure projects such as dams, roads and bridges, it began to switch to projects which directly improved the basic services of a country.
 

　　译文

　　97．每个系的计划包括的一部分是系领域内的专业兴趣的科目，另一部分是学生们自己选择的额外机会。

　　98．可选性地，学生可以用选择性的时间来准备某些专业领域的高级课程，比如说医学或者法律，或者M.I.T.不授予本科学位的某些专业课程，比如说气象学和心理学，或者跨学科的领域，比如说天体物理学，交流学或者能源学。

　　99．尽管开放式理学学士本科课程计划由系里列出，可以有一些自己独特的特点，但每个项目的列出必须与系代表进行协商，以此来保证课程结构有意义，内容富有挑战性。

　　100．以前的重心是诸如大坝、道路和桥梁等大型基础设施的建设，现在开始转换到能直接提高国家的基础服务的项目上来了。