填空题

"Sesame Street" has been called "the longest street in the world". That is because the television program by that name can now be seen in so many parts of the world. The program became one of America’s (36) soon after it was first shown in New York in 1969.
In the United States more than six (37) children watch the program regularly. The viewers include more than half the nation’s pre-school children, from every kind of economic, (38) , and geographical group.
Tests have shown that children from diverse (39) have benefited from watching it. Those who watch it five times a week learn more than (40) viewers. In the US the program is shown at different hours during the week in order to (41) the number of children who can watch it regularly.
Although some educators (42) to certain elements in the program, parents praise it (43) . Many teachers also consider it a great help. (44) .
Why has "Sesame Street" been so much more successful than other children’s shows’ Many reasons have been suggested. (45) . This is partly because famous adult stars often appear on it. (46) . The child finds himself learning, and he wants to learn more.