DFD是以下哪一阶段经常使用的工具
A.需求分析
B.详细设计
C.软件测试
D.软件维护
参考答案:A
解析:需求分析常用的工具:数据流程图(DFD)和数据字典。
下面各组词语中字形全对的一组是[ ]
A.漂泊 幽芳 稀罕 镂镂
B.葬身 欺凌 华侨 灵魂
C.分外 眷恋 毕竟 竟遇
D.玷污 磨难 脏手映 衰老
根据句意及所给汉语提示完成单词。
1. The old woman is crying______(悲伤). What happened to her?
2. I’ve______(刚刚) known it. Sorry to hear that.
3. Kitty got______(结婚) last year. Her husband is a computer programmer.
4. The plane ______(降落) at six this morning. Everything was OK.
5. How many ______(街区) are there in your hometown?