据《史记》记载，公元前544年“齐相庆封有罪，自齐来奔吴。吴予庆封朱方（县名，后改名为丹徒）之县，以为奉邑，以女妻之，富于在齐”。材料反映了春秋时期     [ ]

A．分封制全面崩溃                  

B．宗法制荡然无存     

C．郡县制初现雏形                  

D．实行郡国并行制

Because Web servers axe platform and application (71) , they can send or request data from legacy or external applications including databases. All replies, once converted into (72) . mark-up language, can then be transmitted to a (73) .Used in this way, Intranets can (74) lower desktop support costs, easy links with legacy applications and databases and, (75) all, ease of use.

（72）处填（）。

A．ciphertext

B．hypertext

C．plaintext

D．supertext