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．

1.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

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

    A．Position training．            B．General training．

    C．Classroom training．          D．Special training．

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

    A．Assistance in media service．        B．Helping the disabled

    C．Emergency First aid．            D．Visitor flow management．

Broken rubber bands and flat tires requiring replacement could soon be a thing of the past．

French researchers have developed a new kind of rubber that can repair itself when broken．The new rubber is made from widely available materials including vegetable oil and a common industrial chemical．All the materials are considered safe to the environment and can be easily reused．

The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch．When cut, the rubber can be made new again, simply by pressing the two broken ends back together．

The product can be repaired at room temperature, around twenty degrees Centigrade；other self-healing materials require higher temperatures for repair．

Traditionally, rubber substances are made from huge molecules（分子）connected by strong chemical links, or bonds．The new rubber is made of smaller molecules．The molecules are linked together using hydrogen bonds．When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks（超分子网）．When the rubber is cut, the molecules attempt to connect with whatever molecule is near them．When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new．

However, time is an important element in the process．If the broken ends are not brought together quickly, a repair is not possible．This is because molecules will form bonds with molecules on their own side．The inventors say the surfaces of the rubber can be repaired within a week of being separated．

The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris．The organization is part of France's National Center for Scientific Research．The new material is described in greater detail in the research publication Nature．

1.According to the introduction, which of the following is NOT the advantage of the new rubber?

A．It can be made as easily as common rubber．

B．It is environmentally-friendly．

C．It can repair itself at room temperature．

D．It is made of smaller molecules．

2.What does the 5th paragraph mainly tell us?

A．Why the new rubber is unique．

B．Why the new rubber can repair itself．

C．The new rubber is made from huge molecules．

D．The new rubber is different from the common rubber．

3.If we want to know more about the technology of this kind of new rubber, where can we get the information?

A．In the researchers' diary．                B．In a guide book．

C．In a research magazine．                 D．In a newspaper．

Washington D. C. is a great city to live in and visit – partly because D. C.’s public transportation can get you almost anywhere in the city, D. C.’s subway, the Metro, is great for getting you to the main tourist sites, but the bus is also a great resource and is cheaper. Learn how to conquer the D.C. bus system in a few quick steps will help you to have fun in this city.

* Things You’ll Need: cash or a D. C. Smart Trip card, a transfer (转乘卡) and a map of Washington, D. C.

* To choose a bus line to take from home or your hotel, look at the buses that arrive at the closest Metro stations.

Many bus routes start at a Metro subway terminal and make their way across the greater D.C. area.

*Learn to identify bus stops. They are usually located at the intersections(交叉) of streets. Look for a tall sign with a tall sign with the words of “Metro Bus” that is dark blue at the top, white in the middle and red at the bottom. Once you’ve found one of these signs, check the red section at the bottom of the sign. In it, you should see several number or letter combinations written in white. Those are the bus lines that service that stop.

*Be careful of the direction buses are heading for. All buses have an electronic screen on the front, side and back of the bus that let you know which way they are headed and what line the bus is. The signs will list the last stop on the bus route. Know where your bus terminates on each end so you can get on the bus heading in the direction you want to go.

*To board the bus, you'll obviously need some sort of payment. The bus will only accept cash or a SmarTrip card. Smar－Trip card are purchasable at several Metro stations or at Metro headquarters(总部) and cost $5. You can also buy the card online at www.wmata.com.

*If you do order it online, purchase it in advance as it will take time for it to ship. Riding the bus costs $1.35 if you pay in cash and $1.25 if you pay with your SmarTrip card.

*If you pay in cash, ask for a transfer slip. This will allow you to board the bus within a two-hour time period without having to pay again. These machines are located by the escalators that take you to the waiting platforms.

To enjoy a wonderful tour in Washington D. C., you won’t need        .

      A．a D. C, Smart －Trip card    B．a transfer

       C．a map of Washington D. C      D．a tall sign

According to the passage, you can identify bus stops by           .

       A．looking at the buses that arrive at the closest Metro station from your hotel

       B．checking the red section at the bottom of the sign with a “metro bus” logo

       C．checking electronic screens on the front, side and back of the bus

       D．checking the machines located by the escalators taking you to the platforms

The underlined word “terminates” probably means        .

       A．stops B．decides     C．starts D．passes

Where can you get a Smart－Trip card?

      A．At a platform.         B．At a post office.

       C．At www. wmata. com     D．At a bus station.

Excuse me, but can you tell me________.

—Where can I tie the horse?

—Oh,you can tie it to ______of the tree.

A.both           B.every          C.each            D.either