What is distance learning It means that you study on your own, at home or wherever suits you. Recently, the world famous Open University in the United Kingdom has designed a new style of distance learning, which is called (1) . The phrase "Open Learning" means you study (2) . You read course material, work on course activities, and write (3) . The word "Supported" means you have help (4) , the student services staff at regional centres, and centralized areas such as (5) . You can also contact other students through tutorials and (6) , the University’s online conferencing system, and events and clubs organized by (7) . Most distance learning courses use printed paper materials. They also include some (8) materials such as a CD, DVD or video. Many courses have a web site and an (9) . You’ll need access to a computer (10) to make use of these. The Open University can help its students buy a computer and (11) the cost of accessing the Internet.

With most distance learning courses, no (12) are required to study. of course, you have to be aged 18 when your course starts but there is no (13) . Currently the Open University has around (14) undergraduate and more than 30,000 postgraduate students, of which 10,000 have (15) . Nearly all students are studying (16) . About 70 per cent of undergraduate students are in (17) . More than 50,000 students (18) by their employers for their studies. Most distance learning courses (19) . Some of them are even available in other parts of the world. With over 25,000 of its students living outside the UK, the Open University is the (20) that offers distance learning throughout the world.

15（）

大多数项目实施过程中会出现一些变更，使得项目最终的结果可能偏离最初预期的效果。因此，作为项目经理，你需要尽量地减小变更的影响，并确保在这些变更发生的时候能得到适当的管理。一种可以帮助你达到这个目的的方法是保持项目最初定义的范围和整体的业绩基线。以下这些做法中哪一项不能帮助你达到这个目的（）

A、拒绝新的变更

B、接受出现的各种变更，并将其与原有的基准线相结合制作出新的基准线

C、持续不断地管理基准线上出现的变化

D、确保项目范围变更在产品范围变更中得到反映