E-R模型是描述概念世界、建立______的实用工具。 发布时间:2018-04-13 09:11 │ 来源:www.tikuol.com 题型:填空题 问题: E-R模型是描述概念世界、建立______的实用工具。
题型:填空题 Some of the books appear to be _______ ones that you have read, but after taking _______ second look, you will find that they are different.A./; aB.the; theC.the; /D.the; a 查看答案