Default base constructor will be called anyway if not stateddifferently by giving the: base (...) at the derived constructor declaration.
默认基础构造函数将调用反正如果不换句话说给：基地(…)派生的构造函数声明。
2
An enterprise's share price should reflect the true value of the enterprise. However, enterprise value is stateddifferently in different stock markets. What are the reasons for these differences?