题目内容

Java中一个类最多可以有________个父类。

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Exception类称为异常类，它表示程序本身可以处理的错误，在开发Java程序中进行的异常处理，都是针对Exception类及其子类。

A. 对
B. 错

当一个类实现接口时，沒有必要实现接口中的所有方法。

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Sally as well as her brother ___reading books.

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C. liked
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