An idea that started in Seattle's public library has spread throughout America and beyond. The concept is simple: help to build a sense of community in a city by getting everyone to read the same book at the same tome.
In addition to encouraging reading as a pursuit (追求) to be enjoyed by all, the program allows strangers to communicate by discussing the book on the bus, as well as promoting reading as an experience to be shared in families and schools. The idea came from Seattle librarian Nancy Pearl who launched (发起）the "If All of Seattle Read the Same Book " project in 1998. Her original program used author visits,study guides and book discussion groups to bring people together with a book, but the idea 
has since expanded to many other American cities, and even to Hong kong.
In Chicago, the mayor(市长）appeared on television to announce the choice of To Kill a Mockingbird as the first book in the "One Book, One Chicago" program. As a result, reading clubs and neighbourhood groups sprang up around the city. Across the US, stories emerged of parents and children reading to each other at 
night and strangers chatting away on the bus about plot and character.
The only problem arose in New York ,where local readers could not decide on one book to represent the huge and diverse population. This may show that the idea works best in medium-sized cities or large towns,where a greater sense of unity(一致）can be achieved .Or it may show that New Yorkers rather missed the point ,putting all their energy
And passion into the choice of the book rather than discussion about a book itself.
Ultinatel was Nancy points out,the level of sucicess is not meastured by how many people read a book,but by how many people are enriched by the process.or have enjoyed speaking to someone with whom they would 
not otherwise have shared a word.
46.What is the purpose of the project launched by Nancy?
A.To invite authors to guide readers.
B.To encourage people to read and share.
C.To involve people in communnity service.
D.To promote the friendship between cities.
47.Why was it difficult for New Yorkers to carry out the projict?
A.They had little interest in reading.
B.They were too busy to read a book.
C.They came from many different backgrounds
D.They lacked support from the locat government
48.According to the passage,where would the project be more easily carried out?
A.In large communities with little sense of unity
B.In large cities where libraries are far from home
C.In medium-sized cities with a diverse population
D.In large towns where agreement can be quickly reached
49.The underlined words“shared a word”in Paragraph 5 probably mean
A.exchanged ideas with each other
B.discussed the meaning of a word
C.gamed life experience
D.used the same language
50.According to 
Nacy,the degree of students of the project is judged by
A. the careful selection of a proper book
B. the growing popularity of the writers
C.the number of people who benefit from reading.
D.the number of books that each person reads.