Today, many students are always stressed out. They are often too busy to think{#blank#}1{#/blank#} their diets and exercise. Healthy eating, along with regular(定期的) exercise {#blank#}2{#/blank#} (keep) you healthy. Do you think it is the only way to keep us in {#blank#}3{#/blank#}(healthy)?

As we know, it is important to give your body the energy it needs. Teenage girls {#blank#}4{#/blank#} (need) about 2,200 calories(卡路里) a day and boys need a bit more. {#blank#}5{#/blank#} (fiftieth) percent of your calories should come from rice, bread, {#blank#}6{#/blank#}(vegetable) and fruit. You also need to d{#blank#}7{#/blank#} a lot of water, six to eight glasses a day. Enough water will improve your skin and give you healthy hair.

Exercise can help to make you look good, feel good {#blank#}8{#/blank#} be healthy. Scientists suggest that teenagers should spend at{#blank#}9{#/blank#}(little) 30 minutes exercising every day.

Exercise can make you feel {#blank#}10{#/blank#} (relax)and energetic. It can even help you sleep better at night.

Let's eat healthily and take more exercise.

    Many students think that learning a new language is very difficult. But if your brain (大脑) is only the same size as a bird's, you will know how difficult it is to learn English. That is what some birds can do.

Many birds can copy (模仿) the sounds of language. A type of African parrot is very good at doing this. This kind of parrot has grey feathers and people say they are clever.

Every December in London, the National Cage and Aviary Bird Show tries to find the best "talking" bird in the world. One bird named Prudle stood out (突出) among the " talking birds"  by winning this prize every year from 1965 to 1977. In 1958, somebody took Prudle from his nest in Uganda, and then sold it to a woman named Iris Frost. She then took care of him at her home in Seaford, England. Before he died in 1994, aged 35, Prudle knew almost 800 words in English. Prudle was also the oldest bird in the world that lived in a cage.

Another parrot named Puck was tested in 1993. It turned out that Puck knew even more words than Prudle. Puck knew more than 1,700 English words. In the 2003 Guinness Book of World Records, Puck was listed as knowing more words than any other bird in the world.

Mrs. Brown goes to see her son in London. Her son works in a music club there. Mrs. Brown doesn't know London well. And she can't find her way. 

She sees a man at a bus stop. She wants to ask the man the way. "Excuse me! But can you help me please? Which bus goes to Miller's shop? "Mrs. Brown asks. The man is very friendly. He smiles. But he can't speak English. He can speak French. He is new in London. He puts his hand into his coat and takes out a small book. He opens it and reads something on it, "I am sorry. I can't speak English. "

What did people do to communicate in ancient times? Here are some very interesting answers to this question.

Alphorns（阿尔卑斯长号角） were once used to communicate in the mountains in Switzerland. They are very long and they are very heavy, too. So, alphorns are hard work to blow. Then why use them? Well, they make a loud sound which travels much further than the human voice. Herdsmen（牧民） used them to call cows in the distance for milking. At sunset, alphorns were also used to send a message down to villagers that all was well. These days, they're mostly used as musical instruments.

The people of La Gomera, an island in Europe, have their own special way of sending messages from mountain to mountain. They use a whistled（口哨） language called el silbo, which comes from their language Spanish. Whistling can be heard within five kilorneters, which means it can be used across much greater distances than shouting. El silbo can be used for all kinds of messages, including greetings and announcements. El silbo is used a lot less than it used to be, but primary school students in La Gomera have to leave it.

Did you know it 's also possible to send messages without making a noise? This is called visual communication, and it includes the use of flags and even smoke. Long ago, soldiers along the Great Wall of China used smoke as a warning. If they noticed the enemy from their signal（信号） tower, they lit a smoky fire. When soldiers in other towers saw the smoke signal, they lit fires, too. In this way, messages about the enemy's arrival could travel as far as 800 km in just a few hours.

Look at this video online. A teenager from another country {#blank#}1{#/blank#}( cook) the real Chinese food at home and teaching others.

His name is Max Burns, he is {#blank#}2{#/blank#} 19- year- old Englishman. He is very popular on the Internet because of his videos of making Chinese food. It took Max's parents many years {#blank#}3{#/blank#}( work) in China. Max spent his first 13 years being immersed in Chinese culture, learning the language and loving the food. When his family{#blank#}4{#/blank#}( move) to Brighton, UK in 2016, Max missed Chinese food very much. He started {#blank#}5{#/blank#}( buy) takeaway food from local Chinese restaurants at first. But the meal didn't taste the same as they were in China. They were also very expensive. Then Max decided to try to make Chinese {#blank#}6{#/blank#}( dish) at home.

Max found that many of his friends didn't know much {#blank#}7{#/blank#} the real Chinese food. He wanted to do something, then he made videos of making Chinese food and put them online. He can even make jianbing -a traditional Chinese street food, {#blank#}8{#/blank#} zongzi - a traditional Chinese rice dish. The videos helped{#blank#}9{#/blank#}( he) win millions of fans all over the world.

" When people ask me where I am from, I find it hard to answer {#blank#}10{#/blank#} I grew up in China and now I'm living in the UK," he says."I'm just trying to share Chinese and British culture with Chinese and English people, and build a cultural bridge between them."