【推荐2】Doctors across the world tell us it is necessary to eat lots of vegetables to keep the heart healthy. But a new study in February, 2022 suggested eating a lot of vegetables may not greatly cut down the risk of heart problems.

The study is from universities in Oxford and Hong Kong, China. Almost 400,000 people took part in it. They answered questions about their lifestyle, food, and what raw (生的) and cooked vegetables they ate. The study actually found that the risk of dying from heart problems was around 15% lower for those eating the most vegetables, especially raw vegetables.

However, scientists explained that many other factors (因素) also have something to do with this 15% drop. These factors may affect (影响) our health just as much as vegetables. These include other things we eat, how much exercise we get, where we live and whether we smoke or drink. Lead researcher Dr. Qi Feng from the University of Oxford said, “Our large study did not find clear evidence (证据) that how many vegetables you take can cut down chances of heart problems.”

But does it mean that eating vegetables is futile? No. Many other scientists advise that people should still eat at least five kinds of fruit and vegetables every day. That’s because vegetables are important for keeping good health and reducing (减少) the risk of serious illnesses.

【推荐3】Have you ever seen people building houses? To build a house, you need workers. They use their hands, tools（工具）and machines to put things together. Building the ISS（国际太空站）is the same. The difference is that the workers are astronauts. They walk in space and use robots’ arms and hands to do their work.

In the space station, astronauts are comfortable. The temperature there is about 21°C. But outside the station, it can be too hot or cold for people. In the sunlight, it’s about 120°C. In the shadow（阴暗处）of the station, it’s about -85°C. So, when astronauts walk in space, they have to wear heavy clothes spacesuits.

Spacesuits also keep astronauts safe from flying rubbish（垃圾）in space. Each time people go into space, they leave rubbish there. Astronauts should be careful because there’s a lot of rubbish, and some rubbish goes many times as fast as a plane!

Space walking is not easy, and it can be dangerous. Getting ready for it takes a lot of time to learn. Astronauts will need to do 160 space walks to finish their work in the ISS. That will take about 1,900 men hours of work.

Harvard is older than the United States. This isn't a joke. It's a true story. Actually Harvard University is more than one hundred ye ears, older than the United States.

In the early 1630s, some people who came to the new land from European countries had a meeting. Some people suggested setting up a university just to improve the quality of their children so that they could better build the new home. Thus, it was born in 1636.

Like many other private universities at that time, the Harvard at the early times was often short of money. Few of the local people were rich enough to give large amount of money to the school. Sometimes they even had no money to hire teachers. The school board often had to go to Europe to raise money, but as you can guess, they often came back with their hands empty.

In 1638, a man named John Harvard, passed away. He left his library and half of his money to the university, which was the biggest donation （捐赠） ever since its birth. Therefore, the university was named after his name. Today, you can find a statue of John Harvard standing in front of the University Hall in Harvard Yard, and it is perhaps the university's best known sign.

Like other world famous universities, Harvard also has many colleges, and Harvard Business School is one of them. There is a saying in education that Harvard is the crown （王冠） of American education and Harvard Business School is the shining diamond on it.

【推荐2】“The Chinese Dream” is a hot topic of this year. Many Chinese young people are inspired by the Chinese Dream. Everyone has their own dreams. They give us courage and confidence to keep us going through difficulties. Here are some advice on how to realize our beautiful dreams.

Never giving up is the key to make our dreams come true. We may fail from time to time, but we can learn from failure, correct our mistakes and try again until we achieve our goals. Our life is like a long journey which is not all roses. It sometimes has wind and rain. We believe rainbows will appear after storms.

Cooperation is also necessary. Everyone likes a person who is good at cooperating with others. Besides, in our society most problems can’t be solved by one person alone. Cooperation is becoming one of the most important ways for people living in the developing society.

At the same time, we should learn to examine our abilities because it helps us know our advantages and disadvantages as well as get a full control of ourselves. Then we may be confident enough to face challenges.

Follow the suggestions above, and our dreams are sure to come true.

【推荐1】Crested ibises (朱鹮) are one of the oldest birds (鸟) in the world. They live in Asia. The beautiful birds have disappeared (消失) for a long time. But on May 23, 1981, Chinese scientists found and saved them. Here is a story of them.

In the past, there were lots of crested ibises in Asia. But in 1960s, people cut down trees. So crested ibises lost their homes and started to disappear. Chinese scientists were worried about this. So they went to many places to find them. But after three years, they still couldn’t find these beautiful birds. Then, on May 23, 1981, Liu Yinzeng and his team found the crested ibises in Hanzhong. “That night, I saw a crested ibis fly across the sky. We ran after it and found six more crested ibises in the forest,” Liu said.

After that, scientists started studying and saving the birds. They asked people not to kill the birds or cut down trees. They also helped birds to get more babies. Over the past 42 years, people saw the number of the crested ibises grow from 7 to over 9000.

【推荐2】All over the world, thousands of animals are used for wildlife tourism. People travel to watch monkey shows, hug baby tigers and swim with dolphins. It might look like fun, but there are reports that animals are hurt now and again. The World Animal Protection (WAP) says that up to 550, 000 wild animals are exposed (暴露) to ill treatment around the world; in Cambodia, for example, it’s been reported that elephants have died after carrying tourists for long in hot weather. This is getting attention—over 100 travel companies have promised that they will no longer open up such places. However, some people argue that animal tourism isn’t always as bad as it seems. So what do you think?