单项选择题
And the command-line invocations： javac Pass2.java java Pass2 5 What is the result？（）
A.Compilation fails. B.An exception is thrown at runtime. C.doStuff x=6，main x =6 D.doStuff x=6，main x=7 E.doStuff x=7，main x=6 F.doStuff x=7，main x=7
单项选择题 What is the result？（）
单项选择题 Which code fragment， inserted at the end of line 12， produces the output p is 420？（）
单项选择题 Which statement is true about the objects referenced by snoog， snooch， and booch immediately after line 23 executes？（）
