题目内容

以下哪种成分不分泌泪液（）

A. 杯状细胞
B. 上皮细胞
C. Wolfring腺
D. Krause腺
E. 泪腺

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当前国内民用无人机的主要控制方式不包括（）

A. 自主控制
B. 人工遥控
C. 人工智能

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

简述开发与利用美术课程资源的意义。

改正下面句子中的语法错误并说明理由。（1）他把一只羊杀了。（2）他昨天买了红色的一件毛衣，打算生日那天送给母亲。