在MS-DOS命令行窗口输入SQL语句需要用（）号结束，在编辑SQL语句的过程中可以使用（）终止当前SQL语句的编辑。
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Demonstrating correctness of a program is the same as testing a program.
A. 对
B. 错
In a large system we should test the interfaces among the modules first.
A. 对
B. 错
Good design is the key to effective software engineering.
A. 对
B. 错
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