Earth Day is on April 22. Since 1970, it has grown into a global （全球的） event. Setting up Earth Day is a way to show how much we care about the future of our planet. It is also a good time to learn more about the environment and how we can help to protect it.

Earth Day is not just about big events but also about thousands of smaller ones to deal with environmental problems in the neighborhood. Not sure where to start? Some experts （专家） have made a list of 10 things that each person could do to save the environment. Each of us is responsible for acting, even in small ways. We can’t say: “The problem is too big, I can’t fix it”.

If we all do at least five of these following things all the time, we can make a big difference.

● Don’t leave the tap running.

● Turn off lights when you leave a room.

● Turn off your computers every night.

● Don’t use paper cups, plates or napkins.

● Care for trees, plants and animals.

● Carry a cloth bag for shopping.

● Wash your clothes in warm or cold water, not hot water.

● Only buy electrical products if you really need them.

● Eat earth-friendly food that is grown of raised as close to your house as possible.

● Tell other people about Earth Day and the ways they can help the environment.

Remember that every day is Earth Day. Anything to help our environment is a perfect thing to do on Earth Day and every day.

Have you ever wondered why different kinds of fruit have so many colors? According to Lu Wei from the Chinese Academy of Sciences, fruit colors actually come from their different pigments. These pigments appear in different amounts （数量）, depending on the fruit’s environment. This causes the fruit to turn a certain color.

To find out how environment influences fruit colors, Chinese scientists studied more than 280 different fruit colors. They found that red fruits are likely to grow in cooler places. You can find them growing in many places around the world instead of just in one place. Blue and purple fruits mostly grow in warmer places. They grow a lot in just one specific （特定的） area. The closer the fruit is to the equator（赤道）, the darker its color will be.

Animals also have an influence on the development of fruit colors. Animals eat fruit and drop the seeds（种子）in other places later. This helps the fruit spread and grow in different places. Therefore, in order to attract（吸引） animals, some fruits develop colors that are easy to see. However, animals see colors in a different way. Fruit needs to develop colors that are suited to animals’ visual（视觉的）abilities. For example, birds can see red more easily than humans can. So there tends to be more red fruit in areas where birds live.

Beijing will host 2022 Winter Olympics. Do you know about winter sports? They are very interesting. They are not only     41     for our health but also can make us strong and brave. There are many kinds of winter sports, such as sledding（滑雪橇）, skiing, ice hockey and so on. Here are some interesting     42     about them.

A sled looks like a boat. It     43     move easily over snow or ice. Many years ago. Sleds were made of wood and used to transport goods（货物）     44     people. Now kids sled for fun. They like to     45     a sled and go down from a hill.

Skiing is one of the fastest sports on land. The fastest skier can ski up to 255 km/h. It is as     46     as a high-speed train. Skiing is     47     one of the most dangerous sports in the world.

Ice hockey is very popular with Canadians. It is a team sport. There are two teams trying to score goals and     48     team has six players. All the two player wear skates, big pads （护具） and helmets （头盔）. They each carry a stick to hit the puck（冰球） into the goal .They can use sticks and their     49     to move the puck but can’t hold it in their hands.

Don’t forget to stay warm and follow the safety rules     50     you are playing on ice.