题目内容：
Charter Schools American public education has changed in recent years. One change is that increasing numbers of American parents and teachers are starting independent public schools______（51） charter schools （特许学校）.In 1991, there were no charter schools in the United States. Today, more than 2,300 charter schools______（52） in 34 states and the District, of Columbia. 575,000 students______（53） these schools. The studentsarefrom 5 years of age through 18 or older.
A charter school is______（54） by groups of parents, teachers and community （社区） members. It is similar in some ways______（55） a traditional public school. It receives tax money to operate just as other public schools do. The______（56） it receives depends on the number of students. The charter,school must prOVer to local or state governments that its students are learning. These governments______（57） the school with the agreement, or charter that permits it to operate. Unlike a traditional public school______（58）, the charter school does not have to obey most laws governing public schools. Local, state or federal governments cannot tell it what to______（59）.
Each school can choose its own goals and decide the ways it wants to______（60） those goals. Class sizes usually are smaller than in many traditional public schools. Many students and parents say______（61） in charter schools can be more creative.
However, state education agencies, local education-governing committees and unions often______（62） charter schools. They say these schools may receive money badly______（63） by traditional public schools.Experts say some charter schools are doing well while others are struggling.
Congress provided 200 million dollars for______（64） charter schools in the 2002 federal budget （预算）.But, often the schools say they lack enough money for their______（65）. Many also lack needed space. A．called
B．asked
C．known
D．said
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