题目内容：
American public education has changed numbers of American parents and teachers are in recent years．One change is that increasing 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 students are from 5 years of age through 1 8 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 sch001．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．prove 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______（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．A called
B．B asked
C．C known
D．D said
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