In some countries，open campus (校园) is widely accepted. For example, French students have a two-hour lunch break from 11:30 a.m. to 1:30 p.m. During their lunch break, they can eat at home or at a restaurant. But students in the Philippines have a tougher schedule. They have only two 15-minute breaks and an hour for lunch.

    What Schedule would be best for American schools?

    Having breaks between classes is great, but having breaks off campus is even better. There are several advantages to open campus, including simple conveniences such as being able to eat different meals during lunchtime, rather than having the cafeteria (自助食堂) dishes, as well as having the chance to take a break at home.

    However, there are more reasons I disagree with allowing high school students the right to have an open campus. Sure, it's great being able to escape school during the day for a while, but soon enough that may easily become the rest of the day.

    If open campus is allowed, it is very possible that such freedom will make it all too easy for students to skip their afternoon classes. Of course, there will be students responsible enough to come back to school.

    But unexpected problems such as heavy traffic, city bus delays (延迟) or cars breaking down may prevent them from returning to school. It benefits the students to stay in school during lunch hours to avoid transportation issues.

    Depending on how close the school is to restaurants and students' homes, open campus could be a great idea. Unfortunately, though, most public schools in America are not located close enough to restaurants or students' homes, thus causing the negative results to outweigh (超过) the positives in the end.

    If a stranger offered you money to keep a suitcase in your spare room，would you accept? How about the other way round：if you had too many belongings，would you consider trusting someone you met online with their safekeeping? Anthony Paine believed enough of us would answer “yes” to these questions to launch his own startup(新兴公司)，Stashbee．His business links people with space to those who need it．

    And it's just one player in the booming “sharing economy”，an industry that relies on people renting out things like their beds，bikes and even parking spaces．Airbnb，a company valued at 200bn RMB，provides a platform for those renting property short-term．DogVacay pairs holidaymaking pet owners with pet-friendly hosts，and aims to be profitable by 2017．

    All their business models revolve around one simple word：trust．So，how does Stashbee measure up? BBC journalist Dougal Shaw decided to try it out for himself．He had some odds and ends to store while renovating his house，and met a host through the site who could keep them for 475 RMB for two months．All relatively smooth and painless．

    Heavyweights(行业巨头)in the traditional storage industry，such as Big Yenow and Access，aren't convinced．A representative from Access told Shaw he was skeptical about storing with “amateurs”．He considered 24／7(全天候) access to the items and better security as the main advantages of his service.

    Stashbee agree that dealing with security concerns is important，but say business success depends more on people overcoming a distrust of strangers we've been taught since childhood. They aren't alone．Companies such as Costockage，Roost and Spacer all run similar storage businesses，and are all relying on a shift in consumer attitudes．

    And the concept of social storage doesn't stop there．CityStasher believe there's a gap in the market for those who want to store things for extremely short periods of time．

    Would you try it out? It's a question of trust．

    Starting Cycling

    We have two services designed to give people the confidence and knowledge to cycle successfully.

    Lessons

    All our instructors have been trained to National Standards level of “Bike-ability”. This means you will be trained to a standard consistent across the whole country.

    There are 3 levels of skills to progress through. Children would start with levels 1 & 2, progressing from the playground or park to cycle on less busy local roads. Teenager and adult beginners can also learn levels 1 & 2 in an off-road and quiet environment.

    Confident teenagers and adults can broaden their skills by learning level 3, using multi-lane roads and larger roundabouts. We provide both a complete package of lessons for the beginner or individual lessons tailored to the client. Whatever the need we can address and practice until perfect!

    Cost is ￡30 per hour.

    Guided Ride

    We know that riding on the roads in London can be scary, and if you have to navigate (确定行车路线) as well it can become a real hard task! The Guided Ride service takes all the stress out of it for you by providing the following:

    Route planned in advance to suit your skill level. Route map provided to you.

    Cycle and equipment checked. We will teach you a simple method to check basic roadworthiness (车辆性能) of your bike that you can perform on a weekly basis.

    Route discussed and focus given to any areas requiring special attention.

Cycle along with the instructor close behind. Here the traffic can be controlled by the instructor and rider observed.

    We currently cover London Zones 1 & 2. Please contact us if your requirements are outside of these areas.

    Cost ￡30 per hour.

    Societies all over the world name places in similar ways. Quite often there is no official naming ceremony but places tend to be called names as points of reference by people. Then an organized body steps in and gives the place a name. Frequently it happens that a place has two names: One is named by the people and the other by the government. As in many areas, old habits died hard, and the place continues to be called by its unofficial name long after the meaning is lost.

Many roads and places in Singapore(新加坡) are named in order that the pioneers will be remembered by future generations. Thus we have names such as Stamford Road and Raffles Place. This is in keeping with traditions in many countries — in both the West and the East.

Another way of naming places is naming them after other places. Perhaps they were named to promote friendships between the two places or it could be that the people who used to live there were originally from the places that the roads were named after. The mystery is clearer when we see some of the roads named in former British bases. If you step into Selector Airbase you will see Piccadilly Circus — obviously named by some homesick Royal Air Force personnel.

    Some places were named after the activities that used to go on at those places. Bras Basah Road is an interesting example, "Base Basah" means "wet rice" in Malay(马来语). Now why would anyone want to name a road "Wet Rice Road"? The reason is simple. During the pioneering days, wet rice was laid out to dry along this road.

    A few roads in Singapore are named by their shapes. There is "Circular Road" for one. Other roads may have part of their names to describe their shapes, like "Paya Lebar Crescent". This road is called a crescent (月牙) because it begins on the main road, makes a crescent and comes back to join the main road again.

    What to do if you find a sick, injured or abandoned wild animal.

    General tips

    Don't remove an animal from its natural habitat (the animal may not need assistance, and you could do more harm than good).

    Check the animal periodically for 24-48 hours.

    Keep your distance.

    Young animals/babies

    If you find an abandoned young animal, separated from adults or left on its own — keep cats and dogs away and limit noise.

    An adult may not return if it is noisy or if people are close by.

    Get help for a wild animal

    In Ontario, wildlife rehabilitators (复健员) are authorized by the Ministry of Natural Resources and Forestry to provide temporary care to sick, injured and abandoned wildlife so it can be returned to the wild. Rehabilitators commit significant time and resources, and many seek donations to assist with their work.

    Every effort is made by wildlife rehabilitators to ensure wildlife in their care do not become tame (驯服).

    Find a wildlife rehabilitator

    To get help for a sick, injured or abandoned animal, you can contact: an authorized wildlife rehabilitator your local Ministry of Natural Resources and Forestry district office

    Health risks

    If you come across sick or diseased wildlife and you suspect there is a public health risk (such as West Nile virus), contact your regional or local health unit immediately: Ontario Public Health Units

    Public safety

    If the animal is alive and there is a public safety issue, contact your local police department.

A planet the size of Jupiter has been discovered and it is one of the hottest ones known to us. This has made scientists think about how planets are formed.

Planets such as Earth have more oxygen than carbon, but what if the composition（组成）is just the opposite? This is a question opened up by a recent discovery of a diamond planet by US and UK scientists. The planet is 1200 light years away from Earth and was observed using NASA's Spitzer Space Telescope. Dr Marek Kukula explained that researchers initially used the Super WASP(Wide Angle Search for Planets) robotic observatories operating continuously, all year around. They detected the planet, then it was observed with the Spitzer Space Telescope, which detected the heat coming from the planet, and from that heat signature they can tell what this planet is made from.

The planet is very different to Earth. "It's giant planet," explains Dr Kukula, "a gas planet, a bit like Jupiter in our solar system. But the interesting thing that they've discovered is that it has a very different composition to the planets in our solar system. This planet has more carbon than oxygen." This suggests that there is more than one way to make a solar system and the range of planets in the universe could be much wider than previously thought.

Dr Kukula says that if there are smaller planets in the same solar system with a similar composition, rich in carbon, their rocks could be rich in minerals such as carbon and diamonds, unlike Earth which has silica (硅石), the sand that rocks on Earth are made from. "This is where this diamond planet idea comes from; they haven't actually detected a diamond planet yet," explains Dr Kukula.it' s hypothetical (假设的), "but you can imagine strange landscapes with black graphite rocks lying around and the surface could be covered with sticky liquids instead of water".