Here I want to tell you some information about water.

    Water covers most of our planet. People can find it in oceans, lakes and rivers, and under the ground. Water moves in the environment by evaporation, condensation, and precipitation. The warm Sun helps water change into vapour and rise up into the sky. It is evaporation. The vapour in the air forms clouds in the sky. It is condensation. When the clouds get heavy enough, the water falls back to the ground as rain or snow. This is precipitation.

    Ocean water has too much salt in it. Much of the water travels far over the land. When it travels over the land, the water picks up salt from the rocks and soil. About 97.5% of the Earth's water is salty water. It is expensive to take salt out of the water.

    All people need clean water. They need it for drinking, for cooking, and for bathing. Some people in a village in South America did not have clean water. Their water was full of oil and dirty things. People there got sick when they drank the water. Other people heard about the problem. They sent empty water tanks (储水池) to the village. Rainwater fell into the tanks. Now the people in that village have the clean water.

    David Beckham opened his London football academy (学院) in 2005. The academy welcomed boys and girls aged 8 to 15. It accepted 15,0001a year, 10,000 of them free. In America, football is a2sport.3, American football is quite different. Players sometimes kick the ball but they often throw the ball and4with it. They try to take it to the other end of the field. They have four chances to5the ball ten yards (码). They can6and throw it. If they move the ball ten yards, they can try to move it7ten yards.8they move it to the end of the field, they can get six points.

    It is difficult to move the9. Eleven men on the other team try to stop the man with the ball. If he doesn't move the ball ten yards, his team kicks the ball to the other team.10university wants its own team to win. Thousands of people come to watch. They all shout for their11teams.

    Young men and women come on the field to help the people shout more. Each team plays 10 or 11 games each12. The season begins in September and ends in November. If a team is very good, it can play another game13the season ends. The14teams play again on January 1st, the first day of the New Year. Many people go to see these games and many others watch them15TV.

How do you feel when a teacher says it's time for a test? Do you get worried about it? Look at the next test skills （技巧）!

☆Go to class on time and do your homework carefully.

In this way, you will learn the lessons, such as Chinese, English, maths, and so on. You won't have so many worries.

☆Relax and go to bed on time.

After you finish your lessons in the afternoon, you need to relax in the evening and sleep well at night.

☆Get ready well.

You may take paper, a pen, pencils, an eraser, a watch, and books or a dictionary with you.

☆Read the questions carefully.

You must read the questions carefully before you answer them, or you will make mistakes.

☆Breathe （呼吸） deeply.

When you feel worried, put your pencil down on the table, close your eyes, breathe deeply and count numbers to 10. In this way, you will feel relaxed and you can do well in the test.

    If you had billions of dollars, would you donate almost all of it to charity? Well, that's what Mark Zuckerburg, CEO and founder of Facebook, just said he would do.
    Zuckerburg and his wife Priscilla Chan promised to give 90% of their Facebook shares to society. Right now that is about $45 billion, and they plan to donate the money to things like science and education.
    Many billionaires have done similar things. Bill Gates, creator of Microsoft, made The Giving Pledge, an activity in which billionaires promise donate more than half of their wealth to charities. This started in 2010, and now 139 people from 15 countries joined it.
    But giving back and helping others isn't just for big billionaires. People like Zuckerberg, and Gates may have more to give, but people with less are doing it, too.
    Especially around the holidays, people want to do their part and give back to people who are less lucky than them. Schools may have food collections where people bring a few food items, and together they can make a big donation to places like homeless people's homes.
    People also host special events like concerts of runs to be creative while raising money. Regular people donate whatever they can to US charities like the United Way and the American Red Cross.
    Then these charities are able to help US communities in different ways like education, health and improving the lives of the poor. These individual donations come together to make a big difference.

A Chemical reactions(化学反应)make for some great experiments.You can make use of the CO₂ (carbon dioxide) given of by a baking soda and lemon Juice reaction to blow up your balloon! 

What you'll need:

★Balloon 

★About 40 ml of water (a cup is about 250 ml so you don't need much) 

★Soft drink bottle ★Juice from a lemon 

★1 teaspoon of baking soda Instructions: 

★Before you begin, make sure that you pull the balloon long to make it as easy as possible to blow up. 

★Put the 40 ml of water into the soft drink bottle. 

★Add the baking soda and mix it with water. 

★Put the lemon juice in and quickly put the balloon over the mouth of the bottle. 

What's happening?

If all goes well, then your balloon should inflate(膨胀)! Adding the lemon juice to the baking soda creates a chemical reaction and produces CO₂. The gas rises up and escapes through the soft drink bottle. It doesn't, however, escape the balloon, pushing it outwards and blowing it up.