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举一反三
【多选题】以下对重写描述正确的是( )
A.
方法重写要求子类的声明部分（方法的返回类型，方法名和参数）和父类保持完全一致
B.
方法重写时，父类的方法会被覆盖掉，不再存在。
C.
父类修饰为 abstract 的方法不能被重写。
D.
父类修饰为 final 的方法不能被重写。
E.
重写建立在继承的基础上。
【单选题】The three main types of secondary education in the United States have been provided by the Latin grammar school, the academy, and the public high school. The first of these was a colonial institution....
A.
European educational systems are not good
B.
as high schools developed in the United States, the decision was made to make them responsible to people from all classes of society
C.
there was an aristocratic and selective principle in the European educational tradition
D.
public high schools in the United States embraced the European educational tradition