题目内容：
根据下列题干，回答题：Because Web servers are platform and application（ 66 ），they can send or requestdata from legacy or external applications including databases.All replies，once converted into（ 67 ）mark-up language，can then be transmitted to a （ 68 ）.Used in this way，Intranets can（ 69 ）lower desktop support costs，easy links with legacy applications and databases and，（ 70 ） all，ease of use.
请选择（ 66 ）处最佳答案
参考答案：
答案解析：