在金信工程中，基本安全防御体系中的密码系统要（）A、系统控制 B、分区控制 C、保密控制

下列发明专利申请所涉及的技术方案哪些具备实用性（）？

A．一种为美容而实施的外科手术方法

B．一种利用喜马拉雅山上的无污染水制造的饮料

C．一种利用长江某段的独特地形建造水电站的方法

D．一种在奶牛饲料中添加含硒物质得到富硒牛奶的方法

作废与过期的单证须将作废或过期联次交回，由单证管理人员定期进行销毁。

宋代禅宗大师青原行思曾提出参禅的三重境界：参禅之初，看山是山，看水是水；禅有悟时，看山不是山，看水不是水；禅中彻悟，看山还是山，看水还是水。其中蕴涵的哲理是                                     

①获得真理才是认识的最终目的         ②认识是不断发展的

③认识是主体对客体的能动反映         ④认识是主体创造客体的过程

A．①②

B．②③

C．③④

D．②③④

阅读下列材料：

       材料一：以英国为例，生铁产量1740年为1.7万吨，1800年增至25万吨；棉花加工量1764年380万磅， 1789年增至3240万磅。

       材料二：资产阶级在它的不到一百年的阶级统治中创造的生产力，比过去一切世代所创造的全部生产力还要多。…… ——《 * * 党宣言》

       材料三：一方面由于无产阶级不满情绪的增长，另一方面由于他们力量的壮大，产业革命，便孕育着一个由无产阶级来进行的社会革命。  ——恩格斯

（1）材料一反映了英国正在经历一场什么变革？

（2）材料二表述的核心内容是什么？

（3）根据材料三分析这场变革对社会阶级关系带来的影响。

Kofi Annan says helping survivors of last week’’s earthquake and (1)________in the Indian Ocean is (2)________. The United Nations secretary-general says countries that have offered aid must (3)________and provide it. The offers add up to around (4)________dollars. United Nations officials say (5) ________of that is needed during the next six months.The concern about offers of international aid is (6)________. For example, the earthquake in Bam, Iran, in (7)________of 2003 killed more than (8) ________people. Countries and groups offered hundreds of millions of dollars (9) ________. The United Nations says it has (10)________only about (11)________dollars in aid received so far. Governments and organizations that offered help (12) ________that, however.On (13)________Mr. Annan met with world leaders in Jakarta, Indonesia to discuss aid for (14)________. The leaders discussed and (15)________the idea of (16)________owed by affected nations. But the leaders did not say they would do so. Some said that (17)________to survivors would be more helpful.Representatives of (18)________countries and international organizations attended the meeting in Jakarta. Officials say they will cooperate to develop (19)________ for the Indian Ocean and the (20)________.