Can you imagine astronauts' everyday life in space? They also need to eat,  1 , exercise and relax. They do the same things as us, but they do2 differently.

    On Earth, we put food on a plate and water in a glass. Gravity(重力) holds the food down and keeps the water in the glass.  3 there is almost no gravity in space, so food can float(漂浮) away, and astronauts must eat and drink4  .

    Sleeping is very different in space. Some astronauts like to float in the air, but most like to be in a 5bag. They tie the bag to a wall 6 they won't float away at night. Exercise is very important in space. On Earth, your legs 7 your body, but in space, astronauts float. So they do not use their legs often. This is very  8their legs, so they must exercise for thirty minutes every day.

    After a day's work, astronauts relax. They may listen to music, read, watch films, play games, or talk to their friends and families  9  the radio. Sometimes they just enjoy 10 in the air.

Are Sports Important?

    Sports are all around us. We watch and read sports news. There are also sports clubs, and even sports-only channels(频道) on TV. In many countries, players make millions of dollars every year. But why are sports so important? They're only games, right?

    Our readers answer:

    Vlad (Ukraine乌克兰)

    Sports bring people together. In 2006, our team was able to play in the 2006 World Cup for the first time. Everyone was happy. Rich and poor, old and young, men and women—everyone was in the streets together!

Mike (U.S.A.)

    Sports bring people together, but they divide them too. Fans of different teams fight all the Time-they shout and hit each other. And here's another example: My brother plays high school baseball. Last week, his team played an important game. At the game, two parents fought about a call .

    Come on … baseball is only a game! Sports are so competitive (有竞争力的) these days. It's all about winning. Then the game isn't fun.

    Oba (South Africa)

    Right now, some of the world's best soccer players are from African countries, and the 2010

    World Cup games will be held in South Africa. Yes, some players make a lot of money—maybe too much, but sporting events (like the World Cup) bring tourists and money to countries and people. And that is good for Africa.

    There are many kinds of pollution around us, 1 air pollution, soil pollution, noise pollution and light pollution. They are bad 2 our health in many ways.

    Burning gas, oil and coal creates air pollution. It can cause some eye and breathing problems.

    With the 3 of pollution and the development of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many 4 in the fields. They destroy the soil.

So soil pollution has become serious.

    Noise pollution can make people 5. For example, people may lose their hearing if they have worked in a 6 place for a long time. Too much noise can cause high blood pressure 7.

    Having worked for a long time in strong, changeable light 8 cause some kinds of illnesses. It makes people feel 9 and is especially bad for the eyes.

    With 10 pollution, our planet will become greener and our health will be better. Let's be greener people.

    A famous designer(设计师) and a university student produce a new cup called Vessyl. They have spent several years1it. The smart cup can not only tell Coca Cola from Pepsi Cola,2also tell people whether they should drink water or not.

    When people3liquid(液体) into this smart cup, a few seconds(秒) later, it can check this kind of liquid and tell them what it is. Then it gives4information of the drink, such as sugar, fat and calorie. When people put the cup in their5, it can also show them the condition of their bodies. If they are6, I can tell them to drink water.

    "My partner and I want people to7healthy. In modern society, people are usually8busy to do exercise, or even drink enough water every day. They have much9. We produce this smart cup so that people can make a choice10," the designer said.

    Each one of us shares this planet with seven billion others. And we all need 1. People and products need to move from city to city and country to country. However, we all know 2 most cars, motorcycles, boats and planes cause air pollution. They are also 3.This is a serious problem in many cities.4 inventors are coming up with creative ideas to try to reduce the pollution and noise.

    In many cities around the world, motorcycles are very 5. Now Vietnam has around 33 million motorcycles and China has almost 120 million. Motorcycles are a faster and cheaper way to get around a city than 6. Yet air pollution is a growing problem. In large cities, people7it is difficult to breathe. To solve these problems, a US company designed an environmentally friendly motorcycle. It uses electricity as fuel (燃料). As a result, there is 8 pollution. It's also quiet and fast. This makes 9 a good choice for getting around a city.

    The Italian city of Venice is a city with only a few 10. There are no cars in the city center,11 cars, water taxis and buses carry people along the city's canals (运河). However, they cause pollution, 12 to the water. English engineers Dick and Jim designed a solar –powered(太阳能) water taxi. The water taxi 13 run for a day after being recharged(重新充电). Planes also cause air and noise pollution. Designing an environmentally friendly airplane is a real 14. Some airplane companies have 15 to solve the problems. Swiss engineers have gone one step further. They developed a solar airplane. This plane holds the world record for the longest solar-powered flight-1,541 kilometers from Arizona to Texas in America.