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    And why do we have them? Scientists are learning to find the reasons, but they still know very little about why we dream.

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    Modern research can tell us some important facts about dreams. For example, we have most of our dreams during REM sleep. At this time，the brain is very active. Another fact is that everyone dreams-even if we cannot remember doing so when we're awaken. What's more, an unusual part of our brain has been found. This part sometimes puts our thoughts and memories together in strange ways when we're asleep.

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    Some scientists believe that our dreams are associated with life experiences and things in the dreams have their own meanings. For example, telephones in dreams are thought to be about giving or receiving an important message. A car in dreams often mean feelings about your own life. Broken teeth show fear.

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    Scientists think that people in our dreams can tell us something about ourselves. If the person in the dream was shouting out, for example, maybe you are angry. If he or she was scared in the dream, then maybe you're afraid of something in life.

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    There is still a lot that we do not understand, but scientists are trying hard because the more we learn about our dreams, the more we learn about ourselves.

A.What're the meanings of the things in dreams?

B.What can persons in dreams tell us?

C.Why should we learn more about dreams?

D.What facts do we know about dreams?

E.What are dreams?

    The favorite food in the United States is the hamburger. The favorite place to buy a hamburger is a fast food restaurant. At fast food restaurant people order their food, wait a few minutes, and carry it to their tables themselves. 人们也可以把快餐带出餐馆 and eat in their cars or in their homes. At some fast food restaurants, people can order their food, pay for it and pick it up without leaving their cars.

    There are many kinds of fast food restaurants in the United States. They usually sell some popular food among Americans, like hamburgers, French fries and milkshakes. But fast food restaurants also serve Chinese food, Mexican food, Italian food, Chicken, seafood and ice cream.

    Fast food restaurants are very popular, and many American people like them.

    It's getting hotter and hotter outside. Summer is already here! Summer means high temperature, more outdoor activities and all kinds of fruit and vegetables. How can we stay fit in this exciting season? Here are some good ideas:

    Eat and drink properly

    What is healthy to eat in summer? Fresh and light food. Fish can be a good choice. It can keep your body energetic and help fight against the burning sun. Colourful fruit and vegetables is another good choice. They not only please your eyes, but are full of healthy chemicals(化学物质). Tomatoes can help protect your skin against sunburn. Blueberries are good for your brain and eyes. The more colour, the better!

    With all those summertime activities you will be thirsty. What to drink? Water. Water has zero calories(卡路里) and is the perfect drink to stop your thirst. Try not to drink too many energy drinks, sports drinks and soda drinks which have lots of sugar and caffeine(咖啡因) in them.

    Stay active and cool

    Summer is a great season to enjoy outdoor activities and play. It's also a good time to lose weight. If you are lucky enough to be near a body of water, try water sports like swimming, surfing, water skiing and so on. These sports keep you cool and active at the same time. You'll have no problem beating the heat and keeping fit as well. .

    Be careful of the        

    Summer allows us more chances to get outside ，but it also means more possibilities to get burnt by the sunshine. If you are going outside, keep away from the sun when it's the strongest- usually between 11 a.m. and 3 p.m. If you have to stay in the sun for a long time, sunscreen(防晒霜),a big hat and a long-sleeve jacket will be necessary,

    Come to meet the family. This is a picture of my family. The man is my father. He is a policeman. The woman is my mother. She is an English teacher. They have a son and a daughter. The boy is me. My name is Lin Tao. I'm eleven. I'm a student. The girl in a hat is my sister. Her name is Lin Ying. She's eleven, too. We're twins. We look the same. We're in the same class. We are good students. We like our family.

    I'm an English teacher and I often volunteer to teach kids English in the countryside or poor areas. These experiences have left me so many sweet memories.①

    Once I came to volunteer at a school in the southwest of China. The day before I left, I read Dr. Seuss' Happy Birthday to you to my students in class. It was just my birthday that day. When we got to the part about the birthday horn (号角) — you can play it to make everyone know it's your birthday — I made a joke about how I would like a birthday horn as well. During the afternoon break(课间) that day, all the students in my class got together and made me a horn out of paper.而且他们把他们的名字和心愿都写在了上面。②When I got back into the classroom, they presented it to me with great pride. It was a surprising but sweet present for me. I brought the horn back home and hung (悬挂) it on the wall in my bedroom. It always reminds me of those lovely kids.