单项选择题

What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "bar".
D.The code executes normally， but nothing prints.

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单项选择题

What is the result？（）

A.Cat
B.Dog
C.Compilation fails.
D.The code runs with no output.
E.An exception is thrown at runtime.

单项选择题

Giventhatt1isareferencetoalivethread，whichistrue？（）

A.The Thread.sleep（） method can take t1 as an argument.
B.The Object.notify（） method can take t1 as an argument.
C.The Thread.yield（） method can take t1 as an argument.
D.The Thread.setPriority（） method can take t1 as an argument.
E.The Object.notify（） method arbitrarily chooses which thread to notify.