下面不属于软件工程的3个要素的是( )。
A) 工具 B) 过程 C) 方法 D) 环境
参考答案:D
解析: 软件工程包括3个要素,即方法、工具和过程。
若代数式y2+2y+7的值是6,则代数式4y2+8y-5的值是______.
A good advertisement,people attach positive meanings, can contribute to the sales of a product. [ ]
A. for which
B. to which
C. of which
D. on which