有如下类定义abstractclassanimal{...}下列语句正确的是 A: classdogextendanimal{...} B: classdogextendsanimal{...} C: classdogimplementsanimal{...} D: classdogimplementanimal{...}
有如下类定义abstractclassanimal{...}下列语句正确的是 A: classdogextendanimal{...} B: classdogextendsanimal{...} C: classdogimplementsanimal{...} D: classdogimplementanimal{...}
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