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classSuperFoo{2.SuperFoodoStuff(intx){3.returnnewSuperFoo();4.}5.}6.7.classFooextendsSuperFoo{8.//insertcodehere9.}下面哪三项分别插入到第8行,可以编译?()

A.intdoStuff(){return42;}

B.intdoStuff(intx){return42;}

C.FoodoStuff(intx){returnnewFoo();}

D.SuperFoodoStuff(intx){returnnewFoo();}


参考答案

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