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1、“Sesame Street”has been called the longest street in the world．That is  16  the television program by that name can now be seen in so many parts of the  17  ．The program became one of  18  biggest exports soon after it went on the  19  in New York in 1968．In the United States more than six million children watch the program  20  ．The viewers include more than half the nation's preschool children，21   every kind of economic，racial and geographical  22  ．

“Sesame Street” uses songs，stories，jokes and pictures to give children a basic  23  of numbers, work and human relations．Although some educators object to certain elements in the program，parents  24  it highly．Many teachers also consider it a great help，though some  25  found that problems arise when first graders who have  26  with“Sesame Street”are in the same class with children who haven't watched the program．

Why has“Sesame Street” been much more    27   than any other children's show? Many reasons have been  28  ．People mention the  29  theories of its creators，the support by both government and private business，and the  30 use of a variety of TV tricks．  31  an equally important reason is that mothers watch“Sesame Street”  32  their children．This is partly because  33   adult stars often appear on it．But the 34  reason may be that it  35  every child watching it feel able to learn，and he wants to learn more．