Jenny likesto ____________ herdoll.[ ] A

对城市基础设施经营中的问题叙述不正确的是（）。

A.经营效益不佳

B.维修不足

C.资金充足

D.不适应用户需求

Inland waters may be grouped into two general classes: standing waters and flowing waters. As is often the case, the boundary between these two classes is not sharp and clear. A pond is an example of standing water. But most ponds are fed by springs or brooks and most have an outlet. Thus some current of changing water flows through them. On the other hand, a river is an example of flowing water. In some places, however, a river may have such a slow current that it is very difficult to detect.

Standing inland waters differ in size, in age, and in many abiotic environmental characteristics. They range in size from roadside puddles to the Caspian Sea. Puddles may last for only a few days or weeks; ponds, for a few hundred to a thousand years. In general, lakes are older, though the waters of some tropical “lakes” disappear completely during each dry season. Standing waters vary from very shallow to very deep, from clear to muddy, from fresh to salty.

In flowing waters we roughly distinguish between brooks, creeks, and rivers. The size and age of flowing waters are unimportant. Speed of flow, clearness, oxygen content, and other chemical characteristics are used by scientists in studying flowing-water ecosystems.

小题1:According to the passage, which of the following characteristics of flowing waters is unimportant?

A．Clarity.

B．Size.

C．Speed of flow.

D．Oxygen content.小题2:The word “abiotic” in paragraph 2 can best be replaced by ______.

A．nonliving

B．living

C．coastal

D．inland小题3:Which of the following statements is true?

A．Usually the water in a river flows into a pond.

B．Scientists only study flowing-water ecosystems.

C．Usually ponds last much longer than puddles.

D．The Caspian Sea is considered as an example of flowing water.小题4:From this passage we may know that the distinction between standing waters and flowing waters ______.

A．depends on how people name the waters

B．is clear

C．depends on the seasons

D．is hard to make小题5:This passage mainly tells us that ______.

A．there are two major classes of inland waters

B．lakes and rivers are flowing waters

C．age and size of flowing waters are important

D．ponds and brooks are standing waters

在主机侧安装了多路径软件组要解决了以下哪些问题（）

A.实现LUN到主机的映射

B.避免了同一LUN有多条路径可到导致的操作系统逻辑故障错误

C.增强了链路的可靠性，避免了因为单个链路故障而导致的系统故障

D.建立起存储阵列与主机之间的连接

建设项目的组成是( )。

A．单项工程、多项工程、复杂工程
B．单项工程、多项工程、分部工程、分项工程
C．单项工程、单位工程、分部工程、分项工程
D．单项工程、单位工程、多部工程、多项工程

研究对象、目的和任务：

教育心理学的研究对象是学与教的心理规律，但以前者为主。