单项选择题
A.r， t， t，
B.r， e， o，
C.Compilation fails.
D.An exception is thrown at runtime.
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？（）
多项选择题 Which three code fragments， added individually at line 29， produce the output 100？（）
