用补益药物治疗具有闭塞不通症状的虚证，其治则是 （ ）

A．塞因塞用

B．攻补兼施

C．实者泻之

D．虚者补之

E．通因通用

VRML is a（1）for 3D multimedia and shared virtual worlds on the WWW.In comparison to HTML, VRML adds the next level of interaction,structured graphics,andextra（2）（z and time）to the presentation of documents.The applications of VRMLare（3）,ranging from simple business graphics to entertaining WWW page graphics, manufacturing,scientific,entertainment,and educational applications,and 3D shared virtual worlds and communities. X3D is the name under wluch the development of VRML is continueD.X3D is based on XML andis backwards（4）with VRML.Furthermore,it is componentized,profiled, and extensible,which makes it possible to use X3D in very different（5）,from high-end visualizations to lightweight applications.

空白（4）处应选择（）

A.inconsistent

B.independent

C.applicable

D.compatible