DOM is a platform-and language-____(66)___API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents ( currently,definitions for HTML and XML documents are part of the specification ).The document can be further processed and the results of that processing can be incoporporated back into the presented ___(67)____.DOM is a ___(68)___-based API to documents ,which requires the whole document to be represented in ____(69)___while processing it .A simpler alternative to DOM is the event –based SAX,which can be used to process very large ___(70)___documents that do not fit info the memory available for processing.
（70）处填（）。
A．XML
B．HTML
C．script
D．Web
参考答案：A
解析：
(66)～(70)[分析]
DOM是一种与平台和语言无关的应用程序接口(API)，它可以动态地访问程序和脚本，更新其内容、结构和WWW文档的风格(目前，HTML和XML文档是通过说明部分定义的)。文档可以进一步被处理，处理的结果可以加入到当前的页面。DOM是一种基于树的API文档，它要求在处理过程中整个文档都表示在存储器中。另外一种简单的API是基于事件的SAX，它可以用于处理很大的XML文档，由于大，所以不适合全部放在存储器中处理。