类可以定义静态属性，并通过类名访问。一个类的静态的属性只有一份，由所有该类的对象共享。(8)反映了类间的一种层次关系，而(9)反映了一种整体与部分的关系。

试评述下面一段话：“作为20世纪80年代初期债务危机的结果，拉丁美洲国家抛弃了内向型政策和广泛的国家所有制，向以市场为基础，着重于开放和私有企业的方向发展。” Comment on the following statement：“As a result of the debt crisis of the early 1 980s，government throughout Latin America are rejecting inward—looking policies and extensiVe state ownership，for a market-based approach that emphasizes openness and private enterprise．” 点击查看答案

许多分析家认为在20世纪70年代没有对发展中国家的银行贷款进行仔细评估。那么在对外国政府贷款前。观察哪些宏观经济变量才是可行的呢？Many analysts think that bank loans to developing countries in the 1970s were not evaluated with enough care．Which are the appropriate macroeconomic variables to look at before lending money to a foreign government？ 点击查看答案