函数f（x）=2x3+3x2-12x+1的增区间是______．

IV．任务型阅读: (本题共5小题，每小题2分，共10分)

Select the best heading from the list below for each paragraph in the reading passage. Use each letter ONCE only. Write the appropriate letters A~E, in the spaces numbered 61-65 on your answer sheet. (NB  There are more heading than paragraphs, so you will not use all of the headings.)

Intellectual Disability

61.______   People with intellectual disability form one of the largest single disability groups in a community. Intellectual disability refers to a general slowness to learn and function within society, and the identification of intellectual disability is usually based on an assessment of a person's performance in a variety of tests. An individual's level of performance, as assessed, can change with time and circumstances. With skilled training and opportunity for development, people with intellectual disability have much greater potential for acquiring skills and for participation in community life than previously had been thought possible.

62.______   In many western societies, five categories of intellectual disability have traditionally been used in order to indicate the perceived degree of difficulty an individual has with learning. All five may occur in either children, adolescent or adult, and show as mild, moderate, severe, profound or multiple intellectual disability.

63.______   For the majority of intellectual disabilities, there is no identifiable cause but there are some causes that are well documented. They include: brain damage at birth due to lack of oxygen--- prolonged labor during childbirth; brain damage before birth due to factors such as rubella, drug or diet-related problems; damage after birth due to illnesses such as encephalitis or accident; hereditary defects in the genes; abnormal chromosome count resulting in, for example, Down Syndrome.

64.______   Like everyone else, people with an intellectual disability need a rewarding job, a satisfying place to live and a good social life. But they may need extra support to achieve these things. Good support services are based on the principle of normalization---which means enabling people to be part of the community like everyone else.

65.______   With the introduction of the intellectually disabled into communities, there is a need to promote awareness of communication. Although many people may have little experience in talking with an intellectually disabled person, there are common guidelines that can simplify the interaction. Firstly, it is useful to remember that people with disabilities have feelings .Speaking in the same friendly manner as you would to anyone else is also recommended. Being prepared to wait a little longer for replies during a conversation with an intellectually disabled person would undoubtedly benefit the exchange.

List of Headings

A． What do people with an intellectual disability need?

B． What is intellectual disability?

C． How do people with an intellectual disability talk?

D． What are the forms of intellectual disability?E.  What causes intellectual disability?

F.  How do you talk to a person with an intellectual disability?

教师的任何教育行为都受到（）的制约。

A.教育部门

B.教育环境

C.教育方法

D.教育观念

某市对其沿江流域进行全面规划，划分出商务区、风景区和学院区等区段进行分段设计招标。其中商务区用地面积80000m²，专家组综合各界意见确定了商务区的主要评价指标，按照相对重要程度依次为：与流域景观协调一致(F₁)、充分利用空间增加商用面积(F₂)、各功能区的合理布局(F₃)、保护原有古建筑(F₄)、保护原有林木(F₅)。经逐层筛选后，有两个设计方案进入最终评审。

A方案：建筑物单方造价2030元/m²，以用地面积计算的单位绿化造价1800元/m²；

B方案：建筑物单方造价2180元/m²，以用地面积计算的单位绿化造价1700元/m²。

专家组对各方案的评分结果见表3-2。

[问题]

若以方案总造价作为成本比较对象，运用价值工程理论，按照容积率应如何选择方案？

好的软件结构应该是______。

A．高耦合、高内聚
B．低耦合、高内聚
C．高耦合、低内聚
D．低耦合、低内聚

放大电路为何一定要加直流电源？