然，我们要一个内容广泛的课本来吸引不同背景和兴趣的学生的注意，为他 们提供课堂讨论和论文准备所需要的材料。第一版出版以后，评分方式变了， 改为四次阶段性的场外测验和一次期末考试。考试的许多问题都不需要什么 数学技巧。两种评分方法各有短长，应该还有更好的办法！ 许多人为本书提出了意见和建议，我要感谢他们。 他们是：Thomas Arny(University of Massachusetts,Amherst),Gregory Ben- ford (University of California,Irvine),Robert Brandenberger (Brown University), Mario Bunge (McGill University),Thomas Dennis Mount Holyoke College), James Ellern (University of Southern California,Los Angeles),George Ellis (Uni- versity of Capetown),Stephen Gottesman (University of Florida,Gainsville), George Greenstein (Amherst College),Gary Hinshaw (NASA/Goddard Space Flight Center),Paul Hodge University of Washington),Duane Howells (Hughs Research Laboratories),John Huchra (Harvard-Smithsonian Center for Astrophys- ics),John Lathrop,Charles Leffert,William McCrea (University of Sussex), A.J.Meadows (Loughborough University of Technology),Heinz Pagels(University of California,Santa Cruz),Joel Primack (University of California,Santa Cruz), Martin Rees (Cambridge University),Joe Rosen (University of Central Arkansas), Rick Shafer (NASA/Goddard Space Flight Center),Stephen Schneider(University of Massachusetts,Amherst),Joseph Snider (Oberlin College),Joseph Tenn (Sonoma State University),Virginia Trimble (University of Califomia,Irvine),Da- vid Van Blerkom (University of Massachusetts,Amherst),Gerard de Vaucouleurs University of Texas,Austin),and Robert Wilson Smithsonian Astrophysical Ob- servatory). E·哈里森 新墨西哥，梅西拉 198年5月 2 宇宙学