Would you be able to sleep with one eye open? Bottlenose dolphins（宽吻海豚）can. When they sleep, only half of their brain goes to sleep. They sleep with one eye open to stay safe. Half of their brain sleeps for about two hours before the other half of their brain gets a Chance to sleep. Sometimes, the dolphins will keep swimming while they are sleeping.
Dolphins are not fish-they are mammals（哺乳动物）.These mammals have lungs（肺）.And they don't have gull（腮） like fish. They are also warm-blooded and have to go to the surface of the water lo get air into their lungs. Dolphins don't lay eggs Their young are born alive, and they drink milk from their mothers.
Dolphins are one of the smartest animals in the world. There are many stories about how they save people out of water. They are able to solve many problems like humans. They can even use tools to catch fish. But their cleverness doesn't end there. Dolphins can also pass on anything they learn to other dolphins, like interesting fishing skills. They communicate with each other in many ways. They use different sounds to talk to each other. Dolphins know the "voices" of other dolphins and even know exactly who is making which sound. Another thing that shows their cleverness is that they can also know themselves in a mirror（镜子）and check different parts of their body in it.
Headphones are helpful. Many kids use them. But headphones can be harmful, too. They can cause hearing loss if the value（音量）is too loud. Studies show that one out of every ten kids in the United States has some hearing loss. The cause is loud noise.
Do you know how we hear? There are cells（细胞）inside the ears that help us hear. We can't see them with our eyes. "We call them hair cell," Jackie Clark said. "They look like hairs standing up." Clark is a scientist at the University of Texas. She studies noises and ears. Sound cannot be seen, but il can make the hair cells move back and forward. Think of the wind in the leaves.
Loud noises can damage（损伤）these cells. And once the cells are damaged，they don't grow back. Sometimes, there's tinnitus. "It's like someone is playing a note on the flute（长笛）for a long time." Clark says. It shows we're losing hearing. Tinnitus is not only harmful to our ears, also it can make us feel uneasy. That's why it's necessary to protect our ears.
How can we protect our ears? We'd better keep the volume low when we use our headphones. We should be able to hear sounds around us. And other people shouldn't hear noise from our headphones. "If I can hear what you're listening to when you're wearing your headphones," Clark says, "It's too loud." To protect our ears, keep our headphones at about half volume.
What can you do when you don't want to do homework? You know it has to be done, but it's the last thing you want to do. How can you deal with the problem?
Set goals（目标）for yourself. Your goals don＇t have to be big. In fact，the smaller，the better. Start by setting goals you can reach easily
Make a plan and write it down. Because something about the written words makes it harder to forget. Once you write it down, it's easier to carry it out.
Do it first because it needs a fresh mind. You often dislike it if you find your homework difficult. But if you try your best and finish il, you'll have a sense of achievement.
Use rewards（奖质）to mark your progress. If you have completed part of your homework, you could take a break. Or you could even "allow" yourself to go to a movie on Friday.
Ask your parents for help. If you don't ask, your parents will never know what trouble you have. So they won't be able to give you helpful advice.
These suggestions above could work on you. Try them out. It's time to take action now.
A. How can you make a plan? B. Do difficult homework first. C. Why should you write it down? D. Here is some advice to help you. E. You could also eat something you like. |
As a child, I was quite active. I was running around and getting hurt almost every day. My mom was 1 . A neighbor advised me to learn to fish. I liked the 2 , but my mom said no. She thought it was 3 to get close to say body of water.
At last, my mom got another idea. Every day, she made me sit at the desk and 4 for an hour. I haled reading and cried a lot. Then, my 5 as school teacher, came to help. He led me to my desk and told me to 6 one book. "Read just twenty pages. If you still feel bored after that, just put it down and choose another one," he said.
I started with TheEmperor's New Clothes. After I read twenty 7 as my uncle suggested I was rolling（打滚）on the floor laughing, What a stupid emperor! Next, I read more books. As time went on, I was able to 8 understand the stories. So I started reading longer and more serious books. I fell in love with Journey to the West. My mom said I should spend more time playing outside. But I didn't want to 9 the book.
To this day, I make time to read every day. If you haven't yet experienced the fun of reading, take my uncle's advice and find the "10 " books. They'll give you enjoyment, teach you something new, and even change your life.
I work at a most popular restaurant in my hometown. I love working here as a member of a fantastic team. People here are very （friend） and hard-working.
I started by washing dishes when I was only
18. I worked hard, and soon became waiter. Simon，who was head chef（主厨）then，began to show （I） how to cook. I loved it so much and I （go）to college to learn more. When Simon left the restaurant, I became head chef．At the time all the food was traditional. The quality（品质）was good，but I wanted to do something different, so I decided (have) a different menu.
Now we serve food from all over the country. There are many markets and food shops here. I can （usual）find any ingredient（配料）I need. I use a lot of natural food. Some people think it is not so delicious, I don't agree. Well-prepared natural food has （good） taste than fast food. Our food is healthy and most customers love it. We use the best meat and the freshest vegetables. At the weekend we play many （kind）of music. There's also a special menu children on Saturdays and that's when we serve traditional food.
"Though I was born with half a left arm, I don't think I'm unlucky," said Ms. Yang, a 35-year-old woman from a small village in Hunan. She's a successful Xiang embroidery（湘绣）artist. Now she runs a Xiang embroidery store.
She lived a hard life for many years. Luckily, her whole family supported her. After college she applied for（申请）over 200 jobs but was turned down again and again. She tried to start her own business but failed with all her money lost. Then she turned to Xiang embroidery
Ms. Yang's interest in Xiang embroidery began when she was a child. She learned some of the basics from a neighbor. After running the store, she took many training courses, including a three-year course at Tsinghua University. She kept developing her skills, saying that her disability wouldn't stop her. In 2014, her business finally started making money. Then she tried to do something for society.
Xiang embroidery has a history of over 2,000 years. As Xiang embroidery is one of the four best-known styles（风格）of embroidery in China, she hopes to spread its culture and make more people learn about it By offering free lessons, Ms. Yang helps lots of people, including many disabled ones.
Ms. Yang's story is encouraging. It shows how important strong wills and interests are. When we face difficulties, we should never give up. Just as a saying goes, "Where there is a will, there is a way."
