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    　　Vitamins(维生素)are a discovery of this century．A hundred years 　　1　　, no one knew anything 　　2　　 them．The vitamins are 　　3　　 by letters of alphabet．Vitamin A 　　4　　 by the eyes．There is Vitamin A in milk, butter and green vegetables．It 　　5　　 by the body．

    　　Vitamin B must be supplied(提供)　　6　　 by some of our food．The skins 　　7　　 grains of all sorts have Vitamin B in them．

    　　Vitamin C is very important 　　8　　 the body．Without it 　　9　　 teeth will become loose and their arms and legs become weak．Oranges and tomatoes 　　10　　 Vitamin C in them．

    　　There are other vitamins．But these A, B, C are the most important．

    (1)
    [　　]

    A．

    before

    B．

    front

    C．

    ago

    D．

    ahead

    (2)
    [　　]

    A．

    about

    B．

    of

    C．

    in

    D．

    for

    (3)
    [　　]

    A．

    naming

    B．

    named

    C．

    is named

    D．

    names

    (4)
    [　　]

    A．

    needs

    B．

    need

    C．

    is needed

    D．

    was needed

    (5)
    [　　]

    A．

    stores

    B．

    be stored

    C．

    can store

    D．

    can be stored

    (6)
    [　　]

    A．

    times

    B．

    in not time

    C．

    all the time

    D．

    any times

    (7)
    [　　]

    A．

    of

    B．

    to

    C．

    on

    D．

    in

    (8)
    [　　]

    A．

    for

    B．

    at

    C．

    with

    D．

    to

    (9)
    [　　]

    A．

    people

    B．

    peoples'

    C．

    people's

    D．

    peoples

    (10)
    [　　]

    A．

    has

    B．

    have

    C．

    there is

    D．

    there are

    答案：1．C;2．A;3．B;4．C;5．D;6．C;7．A;8．D;9．C;10．B;
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    完形填空

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    完形填空。
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    　If you go to a fast food restaurant, you will probably see a lot of teenagers. Today, many teenagers are overweight, and this is because of their bad eating habits. Most teenagers are fond of food with a lot of fat, oil, salt and sugar. People call this kind of food “junk food”.

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