预防计算机病毒的最好的方法是（）。A.对磁盘定期格式化 B.少使用软盘 C.不上网以

光绪诗句“此目漫挥天下泪，有公足壮海军威”中的公指的是[ ]

A．林则徐

B．李鸿章

C．邓世昌

D．曾国藩

The clouds are made ____very small drops of water.[ ]

A.from    

B.of

C.into    

D.up of

当宽则宽，当严则严。有从宽情节的，一定要从宽；有从严情节的，一定要从严，否则就会失去政策的威力。( )

赫尔巴特是传统教育学派的代表，他强调（）

A、以书本为中心

B、以学生为中心

C、以课堂为中心

D、以教师为中心

E、从做中学

Due to a constantly (66) environment, a poor understanding of the user’s needs and preferences, as well as a (67) of willingness to modify. (68) organizational structures and decision models, the full economic potential of Web Information Systems (WIS) has not been realized by now. The data object types of the (69) meta model, the Extended World Wide Web Design Technique (eW3DT), provide hypertext designers (70) a conceptual, user-centric framework and graphical notation for the construction of both, (71) and customized models, during the software development (72) of commercial WIS. A reference model as a normative concept represents an abstraction of a (73) company, its functional units, or its Web Information System and is intended to streamline the design and implementation of complex applications at (74) costs. As precondition for pursuing a partial globalization strategy,eW3DT (75) between technical and content-specific responsibilities for designing, implementing, and maintaining WIS.

A．general

B．common

C．typical

D．special