多项选择题
Which two statements are true about The result if the default locale is Locale.US？（）
A.The value of b is 2. B.The value of a is 3.14. C.The value of b is 2.00. D.The value of a is 3.141. E.The value of a is 3.1415. F.The value of a is 3.1416. G.The value of b is 2.0000.
单项选择题 What is the result when method testIfA is invoked？（）
单项选择题 Which regular expression， inserted at line 12， correctly splits test into "Test A"， "Test B"， and "Test C"？（）
单项选择题 What is the result？（）
