请概括下面一段文字的信息要点。(不超过35个字) 大自然是崇高、卓越而美丽的。它

需求就是指在一定时间内和一定价格条件下，消费者对某种商品或服务（）。

A.愿意购买的数量

B.能够购买的数量

C.愿意而且能够购买的数量

D.实际需要的数量

衡量营养状况的重要指标是（）

A.身长

B.体重

C.前囟

D.头围

E.胸围

《安全生产法》规定，从业人员( )了解其作业场所和工作岗位存在的危险因素、防范措施及事故应急措施。

A．无权
B．经批准可以
C．有权
D．特殊情况下有权

在窗体上画一个名称为Command1的命令按钮，然后编写如下事件过程:　　Private Sub Command1_Click()　　　c = 1234　　　c1 = Trim(Str(c))　　　For i = 1 To 4　　　　Print_____　　　Next　　End Sub　　程序运行后，单击命令按钮，要求在窗体上显示如下内容　　1　　12　　123　　1234　　则在下划线处应填入的内容为（ ）。

A． Right(c1,i)

B． Left(c1,i)

C． Mid(c1,i,1)

D． Mid(c1,i,i)

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.

（67）（）

A.Existing

B.the

C.fact

D.Company