从前在书店就偶然发现:一套多册书的前册出售得最多(整套出售、系列丛书等除外),以后的各册很快地逐级递减。比如,某种广播英语教材,第一册销售得很快,越靠后的越少人问津。这种现象在图书馆中同样出现。例如,我馆小说库中,古典名著《红楼梦》,各种版本不少,但有个明显的现象,即第一册特别少,且破损程度大。在图书的销售和收藏两部门出现同样的问题:一套多册书中的前册紧张,说明了读者的一种读书心理和习惯。首先,是读者出于一种好奇心来选择 Formerly discovered in the bookstore: a set of more books sold in the first album (package sales, series, etc. except), after the book quickly and gradually reduced. For example, some broadcast English textbooks, the first book sold quickly, the more the more people care about later. This phenomenon also appears in the library. For example, in our library novel, the famous classic “Dream of Red Mansions”, many different versions, but there is a clear phenomenon that the first volume is particularly small, and the extent of damage. Sales and collections in the book two departments have the same problem: a set of books more than the book before the tension, indicating a reader’s reading psychology and habits. First, it is the reader who chooses from a curiosity