随着房价的上涨，小何一直在租房与买房之间犹豫不决，以下不作为购房或租房决策影响因素的

设f（x）=ax⁷+bx⁵+cx³+dx+5，其中a，b，c，d为常数．若f（-7）=-7，则f（7）=______．

读漫画《真假难辨》。从政治生活角度看，漫画寓意给我们的启示是(    )

①公民的政治自由应该得到国家的支持和保障

②净化网络环境需要公民坚持权利与义务统一

③政府要审慎行使权力，自觉接受人民的监督

④国家要强化监管，促进互联网行业健康发展

A．①②

B．①③

C．②③

D．②④

空气制动阀在（）电路相同。

A、缓解位和运转位

B、运转位和中立位

C、中立位和制动位

D、制动位和缓解位

B

Volunteers, as an essential part of a successful world exposition, are a major channel for the public to participate in, serve and share the world exposition and a means to showcase the image of the host country and city. The following information is about the volunteer for the World Exposition 2010 Shanghai China．

I．Basic Requirements for Volunteers                         

●  Be willing to participate in voluntary services of Expo 2010;      

●  Age limit: Expo Site volunteers must be born before April 30,

1992 and Expo City Voluntary Service Station volunteers before

April 30, 1994;

●  Obey the laws and regulations of the PRC;

●  Be able to participate in training and relevant activities before the opening of Expo 2010;

●  Possess necessary knowledge and skills needed by the position;

●  Be in good health to meet the requirements of corresponding voluntary positions．

II．Further Information for Volunteers

●  Source

Residents of Chinese mainland, Hong Kong, Macau and Taiwan, as well as overseas Chinese, and foreigners can all apply to be the volunteers．

●  Signup methods

Applicants may log in onto the official websites for online signup．They may also consult or connect with the Expo Volunteer Stations．

●  Time

May 1 - December 31, 2009

Ⅲ．Volunteer Training

Volunteer training includes general training, special training and position training．General training is carried out through internet, while special training and position training are provided through classroom lectures and field practice．

IV．Volunteer Types

●  Expo Site volunteers refer to those offering voluntary services to visitors and the Organizer in the Expo Site, mainly including information, visitor flow management, reception, translation and interpretation, assistance for the disabled, and assistance in media service, event and conference organization and．volunteer management．

● Information booth volunteers are stationed in the Expo's information booths at key transportation centers, commercial outlets, tourist attractions, restaurants, hotels and cultural event places outside the Expo Site．They offer services including information, translation, interpretation and even first aid．

60．If you were born in April 1993, where can you be a volunteer?

A．In the Expo City．          B．In the host country．

C．In the Expo Site． D．In Chinese mainland

61．Which of the training will be done on the Internet?

A．Position training．             B．General training．

C．Classroom training．                 D．Special training．

62．Which of the following service is offered by information booth volunteers?

A．Visitor flow management．      B．Helping the disabled

C．Assistance in media service． D．Emergency First aid．

某一测试在多次施测之后所得的分数的稳定、一致程度称为（ ）

A．信度

B．效度

C．难度

D．区分度