【推荐2】Most polar bears could disappear by the end of the century, scientists say. Global warming is to blame. According to a study published this month in Nature Climate Change, most polar bear populations will be in serious decline by 2080. The cause is melting sea ice.       

Polar bears hunt seals on the ice. Without ice, the bears must wander on the shore, where they are spending more and more time away from their main food source. That means the animals could starve.

“There’s not enough food on land to sustain a polar bear population,” Péter K. Molnár told the New York Times. He is the study’s lead author.

Lack of food leads to another problem: Mother bears may not be fat enough to produce milk for their cubs. Some bear populations could stop having babies, leading to a rapid decline in numbers.

Arctic sea ice usually melts in the spring and summer, then grows in the winter. But now, the ice is taking longer to grow back. Weather statistics say the Arctic is warming twice as fast as the rest of the planet. Ice in the region has declined 13% every 10 years since the 1970s.

The Arctic is home to roughly 25,000 polar bears. Scientists have long known that the animals are in danger. This study, which looked at 13 of the world’s 19 polar bear populations, is the first to identify when they could disappear.

But the study also notes that it is still possible to slow Arctic melting. The world can reduce the burning of fossil fuels and lower the greenhouse gas emissions that contribute to climate change. It would have to be a drastic reduction. Bringing emissions to only a moderate level will still mean the loss of some polar bears.

Saving the bears is up to us, Holland says. “I believe that there is hope,” she says. “But humans need to act quickly to turn that hope into a reality.”

【推荐3】Long ago, many people had gardens. Fewer people were interested in having gardens. But in the past few years, this has begun to change. More people are starting to make gardens again. People of all ages are learning the joy of planting. Maybe you would like to start your own garden. It’s easier than you may think.

The first step is making some choices. What sort of plants do you like? What do you want to grow? Many people have flower gardens. People grow these gardens for the way that they look. They are pretty to look at. Flowers can have many shapes and many colors. Other people grow food in their gardens. They grow fruits and vegetables. These gardens are helpful. Some people like both types of gardens, so they have flowers and food.

After you choose the type of garden you want, you’ll need a good location for it. The best place for a small garden is in a yard. One of the most important things to look for is sun. Always put your garden in a sunny spot. You should also put your garden in a place that is easy to get to. And you will want to put flowers in a place where everyone can see them. Each kind of plant is different. Once you choose the plants you want, you have to learn a little about them. Some plants grow best in spring. Others should be planted in summer. A few plants grow all year long. Choose when you will do your planting. Then choose the best plants to grow.

I’m sure you will enjoy your garden. Gardens can be very pretty. What’s nicer than seeing bright flowers all around you? You can also grow many kinds of great foods. Some people say food they grow themselves tastes better. Best of all, gardens are just plain fun.

【推荐1】When you choose a friend, you should be very careful. A good friend can help you study. You can have fun together and make each other happy. Sometimes you will meet fair­weather friends. They will be with you as long as you have money or luck, but when you are down, they will run away. How do I know when I have found a good friend? I look for certain qualities in his character, such as understanding, honesty and reliability (可靠).

Above all else, I look for understanding in a friend. A good friend tries to understand how another person is feeling. He won't be quick to judge.Instead, he will put himself in the other person's shoes, and he tries to think of ways to be helpful. He is also a good listener.

At the same time, however, a good friend is honest. When he finds he makes mistakes, he will admit them and fix them. You can always have open conversations to express yourselves. In short, good friends will be honest to each other and accept each other.

Another quality of a friend is reliability. I can always depend on a good friend. If he tells me he will meet me somewhere at a certain time, I can be sure that he will be there. If I need a favor, he will do his best to help me. If I am in trouble, he will not run away from me.

In addition to above all, there is a fourth quality that makes a friend special. A special friend is someone with whom we can have fun. He likes to do the same things as me. We share experience and learn from each other. Then we can enjoy our lives and our friendship.

When I meet someone who has these qualities, I know I've found a good friend!