单项选择题

What is the result？（）

A.3
B.23
C.32
D.123
E.321
F.Compilation fails.
G.An exception is thrown at runtime.

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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？（）

A.public void m1（）{}
B.protected void m1（）{}
C.private void m1（）{}
D.void m2（）{}
E.pubic void m2（）{}
F.protected void m2（）{}
G.private void m2（）{}

多项选择题

Which four statments are true？（）

A.Raccoon is-a Mammal.
B.Raccoon has-a Mammal.
C.BabyRaccoon is-a Mammal.
D.BabyRaccoon is-a Raccoon.
E.BabyRaccoon has-a Mammal.
F.BabyRaccoon is-a BabyRaccoon.