A.If line 10 is removed， the compilation succeeds.
B.If line 11 is removed， the compilation succeeds.
C.If line 12 is removed， the compilation succeeds.
D.If line 13 is removed， the compilation succeeds.
E.More than one line must be removed for compilation to succeed.

A.0，0，0
B.150，60，0
C.Compilation fails.
D.150，150，150

A.any class
B.only the Target class
C.any class in the test package
D.any class that extends Target

A.class Man extends Dog { }
B.class Man implements Dog { }
C.class Man { private BestFriend dog； }
D.class Man { private Dog bestFriend； }
E.class Man { private Dog； }
F.class Man { private BestFriend； }

A.Change line 2 to：public int a；
B.Change line 2 to：protected int a；
C.Change line 13 to：public Sub（） { this（5）； }
D.Change line 13 to：public Sub（） { super（5）； }

A.public int blipvert（int x） { return 0； }
B.private int blipvert（int x） { return 0； }
C.private int blipvert（long x） { return 0； }
D.protected long blipvert（int x） { return 0； }
E.protected int blipvert（long x） { return 0； }
F.protected long blipvert（long x） { return 0； }

A.0.0
B.Compilation fails.
C.A ParseException is thrown by the parse method at runtime.
D.A NumberFormatException is thrown by the parse method at runtime.

A.test
B.null
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 1.
E.Compilation fails because of an error in line 4.
F.Compilation fails because of an error in line 5.

A.Compilation fails.
B.atom granite
C.granite granite
D.atom granite granite
E.An exception is thrown at runtime.
F.atom granite atom granite

A.0
B.1
C.2
D.3
E.4

A.4321
B.0000
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 18.