第23题: [单项选择]自定义的异常类可从( )类继承。 A. Error B. AWTError C. VirtualMachineError D. Exception及其子集 参考答案:D 答案解析:[解析] Java语言中Throwable类分为Error和Execption两个子类。自定义的异常类是从Exception及其子集类继承的。
A. Imports rise and exports decline. B. Personal savings rise and huge trade deficit declines. C. Inflation rises and currency depreciates. D. Dollar appreciates and exports rise. 参考答案:B 答案解析:[分析] 见文章第四段第四句话 As prices correct and owners can't pull as much equity from their homes,pernonal sav