Everyone needs friends. We all like to feel close to someone. We can share s{#blank#}1{#/blank#} with our friends and turn to them for help when we are in trouble. In a word, it is nice to have a friend to t{#blank#}2{#/blank#}，laugh and do things with. Certainly, sometimes we need to be alone. We don't always want people around. But we would feel 1{#blank#}3{#/blank#} if we never had a friend.

     To make f{#blank#}4{#/blank#}, you must be friendly. A cheerful person smiles. A smile always makes others like you. Smile at someone and you are sure to get a smile b{#blank#}5{#/blank#} from him

     Try to remember names. It m{#blank#}6{#/blank#} your new friends feel happy when you call them by their names, b{#blank#}7{#/blank#} you don't forget them.

     No two people are just the same. If you don't agree with other people, you should still be friendly. Do not argue, but d{#blank#}8{#/blank#}. You always lose friends if you argue too much. And you should think more of others than o{#blank#}9{#/blank#} yourself. It's good for teenagers to have one or a group of good friends. This is very i{#blank#}10{#/blank#} in children's growing up, because friends can discuss things which are too difficult to say to their family members.

     There's more good news for people who have friends. They live longer than people who don't have friends. Why? It could be that they are happier. Being happy helps you stay well and it could be good just knowing that someone cares about you.

—In 1492．

    Most adults find it hard to remember the things happened while they were children. Now scientists have found exactly when these memories d{#blank#}1{#/blank#}.

    A new study has found that most three-year-old children can remember a lot of what happened to them a year e{#blank#}2{#/blank#}, and these memories are still clear while they are 5 and 6, but by the time they are over 7, these memories become weaker r{#blank#}3{#/blank#}.

    Most children by the age of 8 or 9 can only remember 35% of their e{#blank#}4{#/blank#} from under the age of 3 according to the new studies.

    The scientists say this is because at around this age the way we form(形成)memories begins to change. They say that before the age of 7 children do not have a s{#blank#}5{#/blank#} of time and place in their memories. In older children, however, the early things they can remember become more adult-like in the way they are formed. Children also have a far faster speed of f{#blank#}6{#/blank#} than adults. The discoveries also help to explain why children can often have clear memories of what they have done, b{#blank#}7{#/blank#} then forget them just several years later.

    The children were organized to the laboratory for the first time at the age of 3 and discussed 6 impressed(印象深刻的) things from their past, such as the first relaxing trip with your family, the first d{#blank#}8{#/blank#} accident you met, and the first day of school. The children then returned for a second s{#blank#}9{#/blank#} between the ages of 5 and 9 to discuss the same things. The scientists found that between the ages of 5 and 7,the amount（量）of memories that the children could remember r {#blank#}10{#/blank#} between 63%~72%. However, between the ages of 8 to 9, the amount of memories that the children could remember fell to between 35%~36%.