Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.

Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person's hands and eyes work together, controls the left hand. The left side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.

No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.

Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.

The weather is getting hotter. You are thirsty after playing basketball or riding home from school. A cold drink may be just the thing. But be careful about what you are drinking. Something that looks cool may not be good for your health.

There are plenty of "energy drinks" on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great! But after a careful check, you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.

Caffeine makes your heartbeat fast. Because of this, the International Olympic Committee has limited its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be stopped from taking drinks with a lot of caffeine in them.

So we should stay away from the energy drinks to keep healthy.

When buying a house, most people hope to have nice neighbors. {#blank#}1{#/blank#} People may have different answers (答案). Here are my answers. 

Good neighbors should respect (尊重) each other. {#blank#}2{#/blank#} It's good to greet (和……打招呼) each other. We should never try to learn about others' lives. 

•Good neighbors are always kind-hearted. {#blank#}3{#/blank#} If we are not at home, our good neighbors will keep eyes on our houses. 

•Good neighbors should keep the environment (环境) clean. {#blank#}4{#/blank#}. Keep the floor clean. 

Everyone wants to live a happy life. {#blank#}5{#/blank#} As students, we should all learn to be good neighbors.

A．They always help us when we need them.

B．What is a good neighbor like?

C．Say hello when meeting.

D．I hope everyone can have good neighbors.

E．They always clean the floor.

My name is Cindy. I think the house where I live is beautiful and comfortable.

The living room is not very big. You can see a green sofa and a brown table. A big TV is on the wall. A CD player is on the table. It's Mary's. She is my aunt's daughter.

This is my room. I have many things in my room and they're in different colors. In the middle of the room is a yellow bed. The quilt on the bed is white. Next to the bed is a brown bookcase. Some English books, Chinese books, computer books and picture books are in it. A red sofa, a blue desk and a brown chair are in my room, too. A photo of my family and a map are on the wall. I don't have a TV or a computer, but I have a radio. It's white. I like listening to English on it every day. You can see it on the bookcase.

My room is tidy. I like my room and I like my house, too.

Everybody loves oranges. They are sweet and juicy and it is easy to eat them. 

The orange tree is beautiful. It has a lot of shiny (闪亮的) green leaves. The small white flowers smell very sweet. An orange tree has flowers and fruit at the same time. 

Farmers in other parts of Asia (亚洲) and the Middle East (中东) learn to have orange trees from the Chinese. Then they teach Europeans (欧洲人) how to plant orange trees. Later, Europeans take oranges to America. 

In English, orange means both a fruit and a color. We use the name of the fruit for the color.

Now a lot of families keep pets in their houses. Many pets are small 1 like cats, dogs, and birds.

Dogs are people's favourite pets. The second 2 are cats and the third favourite are birds. These small animals are very 3 and friendly. People usually see the pets as their 4 members. People take good care of their pets. They 5 the pets wear beautiful clothes and have nice names. They buy food for their pets in pet shops. They keep their pets 6 every day.

Many pets have their houses and beds. They often take a walk with people 7 the park in the morning.

Some children like pets 8 they need a friend at home. Many old people live alone (独自). Their children do not live with them. They 9 pets at home just because they often feel lonely (孤独的). They think of their pets as kids and they love 10 very much, so pets are very important.