Libraries give kids a quiet and safe place to read and learn．For over 100years，libraries have played an important role in Americans'education．But how are these book-filled buildings changing with the times？You may be surprised to find out．
Benjamin Franklin famously founded （创建） America's first lending library in 1731．But the public library system got its biggest development in the American history in the late 1800's．Businessman Andrew Carnegie donated millions of dollars to help build free public libraries across the country．Between 1886and 1919，Carnegie's donations helped build 1，679new libraries．
Carnegie believed that libraries could offer the chances to Americans，young and old．He knew that the more libraries there were，the more people would have opportunities to read and use books，speeches and news．
If you can easily find a public library in your community（社区），you'll get more chances．After all，the United States has 9，225public libraries．Today，libraries keep growing．Seven tenths of the libraries have free Internet．It provides much more information and opportunities to ask for jobs online．
Libraries are also teaching kids about the fun of reading．The new program Read!Build!Play!adds reading into playtime．As kids listen to a book that is being read aloud，they use Legos （乐高积木） to build images（图象） from the story happily．Today's libraries are always looking for creative programs to bring people into the library．
Benjamin Franklin once said，"The doors of wisdom（智慧） are never shut．"As long as the doors of public libraries are open，what he said is most certainly correct!

48．How many public libraries have free Internet now？
A.2767．
B.6458．
C.9225．
D.1679．
49．The right order of the following statements is ．
①The public library system in America developed fast．
②The first lending library was founded．
③Libraries provide information and chances to ask for job online．
④Libraries try to bring people into the library by using creative programs．
A．②①③④
B．②③④①
C．③④①②
D．①②③④
50．The last paragraph mainly tells us ．
A．libraries have played an important role in Americans'education
B．public libraries in the US should never close the doors
C．the writer doesn't agree with Benjamin Franklin
D．libraries help people to open the doors of wisdom
51．The best title for the passage is ．
A．the libraries in the world
B．libraries and opportunities
C．libraries teach kids to read and learn
D．the development of the American libraries．