Sharks have been around for a very long time. It means that they have been on earth for thousands of years, and have changed little. A shark is a fish, but it has many {#blank#}1{#/blank#} from a fish. For example, if a shark {#blank#}2{#/blank#} swimming, it will sink(下沉).

    There are {#blank#}3{#/blank#} 200 and 250 kinds of sharks in different size. The largest can be {#blank#}4{#/blank#} long as 15 meters. Sharks feed on fish, {#blank#}5{#/blank#} sea animals, or smaller sharks. It is said that one of the most {#blank#}6{#/blank#} sharks is the Great White Shark. They have attacked(攻击) a number of people off the beaches of America. Australia, New Zealand and South Africa also have shark 0attacks. In some places there {#blank#}7{#/blank#}watchtowers on the beach to warn people about sharks in the water. {#blank#}8{#/blank#} a shark appears, a bell rings to tell people to get out of the water. Shark attack about 100 people a year in America. Perhaps the shark {#blank#}9{#/blank#}thinks that the people is a kind of sea animal, or {#blank#}10{#/blank#} good to eat.

    Making friends is a skill. {#blank#}1{#/blank#} you make friends, you have to decide whom you want to be your friends. Most people like to have friends who like to do the {#blank#}2{#/blank#} kind of things as they do.

    The quickest way to make friends is to smile. When you smile, people think you are {#blank#}3{#/blank#} to them and easy to talk to. It may not be easy to smile at{#blank#}4{#/blank#}, but remember most people will stay away from an angry-looking face.

    To talk with {#blank#}5{#/blank#} is a good way to make friends. One easy way to start a talk with someone is to say {#blank#}6{#/blank#} nice about him. Think about how great you feel when someone says something nice to you. Doesn't it make you want to keep talking to {#blank#}7{#/blank#} person?

    Ask your new friends some questions about {#blank#}8{#/blank#}. Who are their favorite singers？Where do they live? What do they do after school? There are all good {#blank#}9{#/blank#} to start a talk. Make sure you have something to add to the talk, too. When someone asks you a question, you'd better have an answer for them. Remember that nothing will stop a talk {#blank#}10{#/blank#} quickly than a shrug(耸肩) for an answer.