1. [单选题]A collection of relmed information，organized for easy retrieval．
A. Data
B. Database
C. Buffer
D. Stack
2. [单选题]打开DOC文档“48.doc”，有如下表格，欲在空白单元格中计算出整行其他四个单元格的数值之和，应在空白单元格中插入公式______。[*]
A. =SUM(ABOVE．
B. =SUM(LEFT)
C. =SUM(RIGHT)
D. =SUM(A1:D1)
