单项选择题
What is the result？（）
A.Hello B.Hello World C.Compilation fails. D.Hello World 5 E.The code runs with no output. F.An exception is thrown at runtime.
多项选择题 Which four code fragments， inserted independently at line 7， will compile？（）
多项选择题 Which four statments are true？（）
单项选择题 What is the result？（）
