下列情况中的运动物体，不能被看成质点的是（ ） A．研究飞往火星宇宙飞船的最佳运

人类的选举制度出现了问题，其间充斥了太多的金钱和毫无意义的争辩。或许我们应将目光转向大自然，从中找寻选举的内涵，纠正或改善我们的制度。昆虫学家汤姆?西利建议我们应向蜜蜂学习。西利的研究表明，蜂巢是一个真正的民主社会。当蜜蜂需要找个新家时，地点的选择是由许多蜜蜂投票的，比如根据这一地点的大小，湿度和周围鲜花多少等“质量”参数。每只蜜蜂都用舞蹈投票，当跳某种舞蹈的蜜蜂数目足够多时，大多数的意见也就倾向于舞蹈所代表的地点。蜜蜂不仅投票决定“迁都”，在候选蜂后的决定中，工蜂也会以某种方式干预“选举”的走向，选择出整个蜂巢的发展最有好处的那位当女王。 下列哪项最适合？

A.聪明的蜜蜂 

B.选举的内涵 

C.蜜蜂的民主 

D.人类的榜样

阅读理解

     Facebook, the world's biggest social networking site, is celebrating its sixth birthday. The site's founder, Mark Zuckergerg, states that Facebook will continue to work as hard as it has worked in the last six years in order to stay the web's number one communication site.

     The company started in a dorm room in 2004. Today it has 150 million active users, more than the 130 million of its competitor MySpace.

     Facebook is different from other social networking sites because you can communicate with people you really know and trust. Before, most people didn't want to share their real identities online. Facebook has

given people a safe and trusted environment for people to interact online. It has changed the way people

view the world. A friend from any country is only a few clicks away.

     It was back in February 2004 when Zuckerberg started "the Facebook" from a Harvard student's

room. The aim was to help students get in touch with each other over the Internet. Within 24 hours over a

thousand students had signed up and soon after that the network spread out to other universities.

     By 2005 a research study showed that about 85% of the students in the network had a Facebook

account. Another survey showed that Facebook was almost as important as an iPod. At the end of 2005

Facebook came to the UK. And up to today the site has been translated into 35 languages.

     Six years after its start, Facebook has escaped the universities and colleges. More than half of its users are not at college any more and the fastest growing group are the 30 to 40-year-olds. Every day 15 million users update their profiles to tell their friends and the world what's happening to them. They also share

photos, upload videos, chat, make friends, join groups and simply have fun.

1. Facebook is different from other social networking sites mainly because _______.

A. it is set up by Zuckerberg in a dorm room                                        

B. it has changed the way people view the world                                    

C. it makes people communicate with each other online                              

D. it provides a safe and trusted environment to communicate online                

2. Which of the following is NOT true about Facebook?                              

A. It's the world's biggest social networking site.                              

B. The site of Facebook has been translated into 35 languages.                      

C. The number of its active users is 20 million more than My Space today.          

D. Facebook is considered more important than iPod to the students of the UK.      

3.On the Facebook the users can update their profiles besides ______.            

a. uploading videosb. enjoying picturesc. joining groups              

d. shopping on linee. chatting with friendsf. making new friends        

A. abcde                                                                            

B. abcef                                                                            

C. acdef                                                                            

D. abcdf                                                                            

4. The passage mainly discusses _______.                                            

A. when Facebook is started                                                 

B. what Facebook is used for                                                        

C. how Facebook is developed                                               

D. why Facebook is so popular                                                      

可摘局部义齿中，金属基托的厚度应为（）.

A.0.3mm

B.0.5mm

C.1.0mm

D.1.5mm

E.2.0mm

下列遗嘱订立过程中，不需要见证人在场见证的是哪一项

A．自书遗嘱

B．代书遗嘱

C．录音遗嘱

D．口头遗嘱

长期合同是项目质量管理的一个重要方面，因为长期合同（）。

A.激励卖主进行质量保证

B.利用收益-成本分析来提高质量

C.通常会降低成本，提高生产力

D.提供强制性的审核