Today, nearly five hundred weather stations in sixty countries receive satellite pictures.  When they receive new pictures, the meteorologists compare（比较）them with earlier ones.  Perhaps they may find that the clouds have changed during the last few hours.  This may mean that the weather on the ground may soon change, too.  In their next weather forecast, the meteorologists can say this.
　 So the weather satellites are a great help to the meteorologists.  Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours.  Now they can make good forecasts for three or five days.  Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.

    In most parts of the world, many students help their schools make less pollution. They join environment club. In an environment club, people work together to make our environment clean.

    Here are some things students often do.

    No-garbage lunches. How many lunch bags do you throw away after lunch? Environment clubs ask students to bring their lunches in bags that can be used again. Every week they will choose the classa that make the least garbage and report them to the whole school.

    No-car day. On a no-car day, nobody comes to school in a car including the students and the teachers. Cars give pollution to us, so remember:

    Walk, jump, bike, or run!

    Use your legs! It's lots of fun!

    Turn off the water! Do you know that some toilets can waste twenty to forty cubic（立方米）of water an hour? In a year, that would fill in a small river. In the environment clubs, students mend（修理）those broken toilets.

    We love our environment. Let's work together to make it better.

Would you like to live in a city where buildings turn off the lights for you, and self-driving cars will find the nearest parking space themselves? Although it might sound a little far from you, living in a "smart" city like this could happen sooner than you think. 

The towns that we have lived in for centuries have changed a lot, while completely new cities are being built. One such place is the city of Songdo. In every home there will be a "telepresence" system（远程遥控系统）—allowing users to control the heating（暖气）and locks, take part in video meetings, and receive education, healthcare and government services. Around the city, escalators（自动扶梯）will only move when someone is on them, and offices and schools will all be connected to the system. 

The great mind behind Songdo is from the company Cisco. In fact, technology companies around the world such as IBM, Siemens and Microsoft are already in the business. 

About 75% of the world's population will live in cities by 2050, so cities will need to be more modern to solve the coming problems. "Making cities smarter is one way out, and I think this will in turn make cities greener." said Dan Hill, head of a research company.

Technology has changed the way we live and especially the way we work. For many jobs, workers no longer need to be in the office building. People can telework: they can work at home or in any place where they can use the necessary technology. 

It is easy to think that this freedom of working is good for workers and for families. But as it turns out, teleworking is both good and bad. A new report looks at the advantages and disadvantages of teleworking at home. It looks at 15 countries including Argentina, Brazil, India, Japan, the United States and 10 European nations. 

According to Vargas, the lead author of the report, the study finds that about 20% of people in Europe who work in an office are reported to have high levels of stress. However, there are over 40% of stressed-out people in Europe among those who deal with busy work at home. He says those stressed-out people who work at home have trouble sleeping. The report also shows that teleworkers say that they often work alone and are likely to work longer than in the office. 

But the report also says there are advantages for those who telework part-time, or not all the time. It says this is good not only for the workers, but also for leaders and companies. " The findings show that if workers do it on a part-time basis, this way of working can turn out to be positive results for workers, leaders and companies. " The report adds, " Two or three days per week seems to be the sweet spot. " Half the time in the office and half the time outside the office seems to be perfect. 

Vargas explains that many organisations have developed some working rules to solve this problem. They set maximum(最大量) numbers of days per week, during which people can work outside the work-site. Usually, workers are able to telework two or three days a week. 

How to be Outgoing

If（如果）you think you are too shy and want to be a little outgoing, try the following. You can make it.

{#blank#}1{#/blank#} There's no need to hide it. When they get to know you are a shy kid, they'll understand you better. This also helps you feel more comfortable when talking with others.

{#blank#}2{#/blank#}Smile to others so they will think you are friendly and easy to talk to. Remember that other people have feelings too and most people will stay away from an angry-looking face.

{#blank#}3{#/blank#} Try to start a conversation. If you find it hard to do so, say something nice about people around you. Think about how great you feel when someone says something nice to you. Doesn't it make you want to keep talking to those people?

{#blank#}4{#/blank#}Don't waste time worrying about your looks or if people like you. Think more about ways to enjoy the party or the game.

Keep trying and one day you won't be "shy" anymore when you talk to others.

What will you do if you want to be outgoing?（不超过20个单词）{#blank#}5{#/blank#}