【推荐3】Bob is my cousin. He is only five years old. He likes meat (肉) very much. He always has meat for lunch and dinner. He doesn’t like vegetables or fruit. So he is a little fat. My aunt worries (担忧) about him and doesn’t want him to have so much meat.

It’s Sunday. Bob and my aunt go to the zoo to see animals (动物). They see tigers and bears. Bob likes them very much. Then it’s time for lunch. The keepers (饲养员) bring some meat for the tigers and bears.   “Mum,   do tigers and bears have meat every day?” Bob asks.

“Yes, they do,” my aunt says. “It’s time to have lunch. Let’s eat out. What do you want for lunch?”

“Meat.”

“Oh,   Bob. You’re a little fat. Eating much meat is not good for you.”   “No,   Mom. Tigers and bears eat meat every day, and they’re very strong. I want to be strong, too.”

【推荐2】This is David, an English boy. He is 12 years old. He loves hamburgers. He has one hamburger in the morning, three hamburgers and two ice-creams in the afternoon. For dinner, what does he have? Three hamburgers and a coke（可乐）.

Some scientists say, “Hamburgers, ice-cream and coke are nice but eating them too much is not good.” If we have food like hamburgers too much, what can we get?

Scientists had an experiment（实验）on rats（老鼠）to find the answer.

Here are three groups（组）of rats: Group One have fruit and vegetables. Group Two have some vegetables and hamburgers. But they can have hamburgers for only one hour every day. Group Three have hamburgers and vegetables, too. But rats in this group can have hamburgers all day.

The rats in Group Three like hamburgers very much and always want them. After the experiment, they are the fattest（最胖）.

Can it be the same with people? Some scientists say “Yes”. It is OK to love food like hamburgers, but having seven hamburgers a day like David sounds “fat”. You don’t want to be too fat, right? Ice-cream is nice and cool. It’s OK to have one ice-cream after dinner. But it’s not OK to have five ice-creams after dinner. We don’t want to be the fattest “rats”.

【推荐1】On a small island, there was a small village. And there were only a few people. They were all very happy, until one day they realized that their population was growing fast. Pretty soon, there were so many of them that they couldn’t find enough housing!

The leaders (村长) of the island called a meeting to discuss the problem. “What are we going to do?” they asked. “Our population is growing and we don’t have enough houses!” One old man suggested that they should build more houses. “But where?” asked the others. The old man thought for a moment and then said, “We can use some of the space under the sea! We can build houses there!” The others thought it was a great idea, so they started building under the sea. It was hard work, but they managed to build a whole neighborhood (社区) under the sea. They even built a subway (地铁) system to make it easier for everyone to get around.

Soon after, the leaders called another meeting. “We have a new problem,” they said. “Our population is aging and we don’t have enough young people to support (赡养) the elders!” This time, a young woman spoke up, “Why don’t we have more children?” she asked. “Then we could have more young people to help!” The others all agreed, but then they realized that they were already too busy to take care of their own family, let alone (更不用说) more children!

【推荐3】“Now let’s do 20 sit-ups. Ready? Go!” He haipeng is teaching a PE class online. Due to the viral outbreak, Shanxi Experimental Secondary school moved all its offline classes to the internet, including PE classes.

“Our goal is to make sure that students can stay healthy and relaxed as they study at home,” He, who has been teaching PE for 16 years, told Xinhua.

He asked his students to take videos of their workouts (运动) and send them back to him. “This way, students can also watch the videos and see if their movements are correct or not, which is impossible offline.” He said.

Like He, many PE teachers have learned to use livestreaming (直播) apps, while others have recorded videos as guidance for students.

Xie lirong, a PE teacher from Shijiazhuang No. 2 High School, has made a workout video for her students.

“I make use of very simple tools, such as plastic (塑料的) bottles, to do the workout,” Xie told TEENS (二十一世界报). “And the movements don’t need much space. It’s suitable for exercising at home.”

“Online PE classes are really special for me,” Xin Jingrong. A student from Nanning, Guang xi, told TEENS. “It’s funny to think that all my classmates are jumping up and down at home at the same time. But during times like these, staying fit (健康) is really important.”