【名词&注释】
和谐社会、邓小平理论(his theory)、合理布局(rational distribution)、市场调节(market regulation)、当今社会(present society)、机械能守恒(conservation of mechanical energy)、建设小康社会(building a well-off society)、弹性介质(elastic medium)、平衡位置(equilibrium position)、总机械能(total mechanical energy)
[多选题]市场调节具有的局限性主要表现为（ ）
A. 难以实现产业结构的优化
B. 难以实现总量的平衡
C. 难以实现生产的合理布局
D. 难以保证收入的公平分配
E. 难以保证生态平衡
查看答案&解析
举一反三：
[单选题]Passage TwoQuestions 26 to 30 are based on the following passage.
A. A few years ago it was fashionable to speak of a generation gap，a division between young people and their elders. Parents complained that children did not show them proper respect and obedience，while children complained that their parents did not understand them at all. What had gone wrong? Why had the generation gap suddenly appeared? Actually，the generation gap has been around for a long time. Many critics argue that it is built into the fabric of our society.
B. One important cause of the generation gap is the opportunity that young people have to choose their own life styles. In more traditional societies，when children grow up，they are expected to live in the same area as their parents，to marry people that their parents know and approve of，and often to continue the family occupation. In our society，young people often travel great distances for their educations，move out of the family home at an early age，marry-or live with-people whom their parents have never met，and choose occupations different from those of their parents.
C. In our upwardly mobile society，parents often expect their children to do better than they did：to find better jobs，to make more money，and to do all the things that they were unable to do. Often，however，the ambitions that parents have for their children are another cause of the division between them. Often，they discover that they have very little in common with each other.
D. Finally，the speed at which changes take place in our society is another cause of the gap between the generations. In a traditional culture，elderly people are valued for their wisdom，but in our society the knowledge of a lifetime may become obsolete overnight. The young and the old seem to live in two very different worlds，separated by different skills and abilities.
E. No doubt，the generation gap will continue to be a feature of American life for some time to come. Its causes are rooted in the freedoms and opportunities of our society，and in the rapid pace at which society changes.
F. The main idea of the first paragraph is that______.
G. the generation gap suddenly appeared
H. the generation gap is a feature of American life
I. how people can reduce the generation gap
J. many critics argue over the nature of the generation gap
[单选题]到1970年，英国男女公民的选举年龄同等地降为______岁，至此才最终形成了比较成熟的普选制。( )
A. 30
B. 21
C. 18
D. 16
[单选题]邓小平理论围绕的主题是（ ）
A. 什么是马克思主义，怎样坚持和发展马克思主义
B. 什么是社会主义，怎样建设社会主义
C. 什么是小康社会，怎样建设小康社会(building a well-off society)
D. 什么是和谐社会，怎样建设和谐社会
[单选题]一机械波在弹性介质(elastic medium)中传播，在介质中某个质元由平衡位置(equilibrium position)运动到最大位移处的过程中，该质元的()
A. 势能逐步转变为动能，总机械能(total mechanical energy)守恒
B. 动能逐步转变为势能，总机械能(total mechanical energy)守恒
C. 动能逐步变小，总机械能(total mechanical energy)不守恒
D. 势能逐步变大，总机械能(total mechanical energy)不守恒
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