专业属性或标准可概括为（）。A.专门性与高深性 B.服务性与伦理性 C.教育性与组织

阅读理解。

     What does blood do for us? It brings food to all parts of our bodies and takes waste away from them.

All parts of our bodies are made of cells (细胞). These cells are very small. They all need food all the time.

No one had seen cells before the invention of microscope. No one could make pictures of cells because no

one could see them.

     What makes the blood move round the body? The heart does. The heart is a pump. It pumps the blood

and sends it round the body. The heart has rooms with doors between them. It pumps blood in and out

through these doors by changing the size of the rooms so that the doors are opened and shut. The heart

keeps a stream of blood going all around the body and back again to itself. The heart is a very important

part of one's body. When it stops beating, one will die.

1. Blood is important to our body because it can ________.

A. provide pictures of cells

B. bring food and take waste

C. form a stream

D. move around the heart

2. What does the underlined word "microscope" mean in Chinese? 

A. 显微镜

B. 探测仪

C. 放大镜

D. 摄像机

3. According to the passage, a pump is used to ________.

A. open or shut doors

B. send something up

C. change the size of rooms

D. make something in or out

企业系统规划（BSP）方法是由IBM公司研制的用于信息系统建设的方法，它主要用于做出企业信息系统的

A．设计方案

B．总体规划

C．实施细则

D．详细设计

将成本控制分为前馈性成本控制、防护性成本控制和反馈性成本控制的依据是（）

A、按控制的时间分类

B、按控制的原理分类

C、按控制的手段分类

D、按控制的对象分类

E、按控制的时期分类

古希腊神话有哪些主要特点？

台车在开至计划作业巷道时，应距作业点（）米停车，打开强光。

A.10

B.15

C.20