假性牙周袋又称为 A．龈袋 B．骨上袋 C．骨下袋 D．复合袋 E．复杂袋

2009年以来，中开展全方位外交，党和国家领导人先后出席了一系列重要国际会议，并出访了众多的国家，向世界展示了中国应对金融危机、气候变化等当今世界各国关注的热度问题的立场和理念。中国积极走向世界将有利于[ ]

①为改革开放营造营造一个良好的外部环境

②主导世界和平与发展的潮流

③加强与世界各国的合作，共同应对挑战

④展示和平、合作、负责任的大国形象

A．①②③     

B．②③④    

C．①②④        

D．①③④

贷款比率指标

Retirement Age

Retirement is the point where a person stops employment completely．The " standard" retirement age varies from country to country, but it is generally between 50 and 70, according to the latest statistics, 2011．However, for a long time, people have got into an argument about whether the age of retirement should be increased or reduced in their own countries．

There are several arguments for allowing older people to continue working as long as they are able．Many people think that older employees have a large amount of knowledge and experience which can be lost to a business or organization if they are made to retire．Besides, older employees are often extremely faithful employees to and are more willing to implement company policies than the young．A more important point is regarding the attitudes in society to old people．To force someone to resign or retire at 60 or 65 indicates that the society does not value the input of these people and that effectively their useful life is over．

Allowing old people to work indefinitely （无限地）, however, is not always a good policy．Some people took the strong view that age alone is no guarantee of ability．Many young employees have more experience or skills than older staff, who may have been stuck in one area for most of their working lives．Having compulsory retirement allows new ideas in an organization．On the other hand, older people should be rewarded by society for their life' s labor by being given generous pensions and the freedom to enjoy leisure．They can have time to do whatever they like, that is, they can have their own plans or roles and achieve their retirement goals．

With many young people unemployed or frustrated in low-level positions, there are often calls to compulsorily retire older workers．However, this can affect the older individual' s freedom—and right—to work．In my opinion, giving workers more choices over their retirement age will benefit society and the individual．

小题1:According to the passage, older people should go on with work because ____.

A．they will help the business not to fail quickly

B．they have grasped much practical experience

C．they need to have a sense of achievement

D．they want to learn more knowledge小题2:The underlined word "implement" in Paragraph 2 probably means "______".

A．take over

B．work on

C．get rid of

D．carry out小题3:The third paragraph is mainly to tell us that ______．

A．older people can' t do their work well

B．young people usually have new ideas

C．it is better for older people to retire on time

D．older people would like to do something else小题4:Which of the following shows the structure of the passage?

何为发电厂原则性热力系统，有何特点，实质和作用？

企业信息工作的技术模型划分为若干层次，而最基础的两层则是建立企业模型和进行 ( )。

A．开发人员管理规划

B．信息资源战略规划

C．预见

D．管理部门