某站ⅠG停有下行待发列车，出站信号已开放，这时若按压XLA、D17A，进路能排出。

把点P₁（2，-3）向右平移3个单位长度到达点P₂处，则P₂的坐标是（　　）

A．（5，-3）

B．（-1，-5）

C．（2，0）

D．（-1，-1）

输卵管妊娠最常见的病因是（）

A.输卵管发育或功能异常

B.慢性输卵管炎

C.输卵管复通术后

D.盆腔子宫内膜异位症

E.宫内放置节育器后

单纯收缩期高血压的诊断标准是（）

A.SBP≥140～160mmHg

B.SBP≥140mmHg和DBP<90mmHg

C.SBP≥160mmHg或DBP≤90mmHg

D.SBP≥160mmHg和DBP≤90mmHg

E.SBP≥160mmHg

在尿沉淀中找到移行上皮癌细胞，那么可不考虑下列哪种情况（）。

A.肾盂癌

B.输尿管癌

C.膀胱癌

D. * * 癌

E.前列腺癌

VRML is a (151) for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra (152) (z and time) to the presentation of documents. The applications of VRML are (153) , 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 which the development of VRML is continued. X3D is based on XML and is backwards (154) with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different (155) , from high-end visualizations to lightweight applications.

A．subject

B．object

C．dimensions

D．disconnection