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【判断题】
多态性允许以统一的风格编写程序,以处理种类繁多的已存在的类以及相关类。该统一风格可以由父类来实现,根据父类统一风格的处理,就可以实例化子类的对象。,多态的实现依赖于抽象类和接口。A.
正确
B.
错误
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【简答题】看图，填空。 Hello, I'm Sarah. What's your ______________ (名字)? ______________ name's Bei Bei. I'm a ______________ (黑色的) dog. ______________ ______________ Mimi. I'm a ______________ (白色的) cat.
【简答题】What happened to the man?
【简答题】Laziness is a state of inaction. It is something that you do, not something that you are. Being lazy means you have no to do anything. This is obvious but the mistake that many people make is themselv...
【单选题】What ____ to him yesterday? [ ]
A.
had happened
B.
happen
C.
happened
D.
was happened
【简答题】What happened in London?
【单选题】Could you please tell me ______ just now? [ ]
A.
what's happened
B.
what's happening
C.
what happened
D.
what was happened
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