Philadelphia is a city known for many things. It is where the Declaration of Independence was signed in 1776, and it was also the first capital of the United States. 36__ It is home to nearly 3,000 murals (壁画）painted on the sides of homes and buildings around the city. That's more murals than any other city on Earth. 37
More than 20 years ago, a New Jersey artist named Jane Golden started a program pairing troubled youth with artists to paint murals on a few buildings around the city. _38
The teenagers involved helped to create magnificent pieces of art, and there were other, even more important，benefits. The young people learned to cooperate and get along with many different kinds of people during the painting. They learned to be responsible, because they needed to follow a schedule to make sure the murals were completed. _39___It is hard for anyone to see the spectacular designs and not feel proud to be a part of Philadelphia.
Take a walk around some of the poorest neighbourhoods in Philadelphia and you will find beautiful works of art on the sides and fronts of buildings. Of course the murals are not just in poor neighbourhoods，but richer ones as well. Special buses take tourists to different parts of the city to see the various murals, which show the diverse ethnic groups that call Philadelphia home.
_40 _It is also a model for other cities throughout America seeking to help troubled youth.
A. How did this come to be?
B. What happened to the murals on Earth?
C. They also learned to take pride in their community.
D. But one fact about Philadelphia is not so well-known.
E. From this small project, something magical happened.
F. The program encouraged troubled youth to paint together with their teachers.
G. As a result of its success, the mural program has now become the nation's largest public art program.
答案 . D 37. A 38. E 39. C 40. G