阅读理解. Charter schools operate with public money but without many of the rules that govern traditional public schools.In the United States the rules for charter schools differ from state to state.But in general these schools have greater freedom to decide what to teach and how to teach it. The 'charter' is a performance contract.It establishes the goals of the school and other details like how student performance will be measured.Fortyseven million students attend traditional public schools.But more than a million students attend charter schools. And now a group of charter schools have formed the Green Charter Schools Network. The idea is to have environmentally friendly school buildings but to also go further than that. The schools teach students to become involved in community issues that affect them and the environment.For example,young children grow crops in a school garden and learn about healthy eating.Older students help recycle waste from the cafeteria.And local schools share what they grow in community gardens with people in need. Jim McGrath is president of the Green Charter Schools Network.He says there are about 200 'green' charter schools across the United States.He says the plan is to also include traditional public schools as well as private schools. Jim McGrath:'The most important thing is that every one of us-every child,every adult-has a responsibility that their action,every action we make has an effect on the earth that we live in.And that our natural resources are not unlimited.And that if we want a positive earth for future generations,we all need to make commitments to be agents of change so that we don't destroy our natural resources.' T he Green Charter Schools Network holds its first national conference this October in Minnesota.It will include companies and organizations like Waste Management and the United States Green Building Council.We sincerely hope that their goal is to expand the movement across the country. 1．Charter schools are quite different from public ones in that____. A．they are operated by public money B．they still use the traditional rules C．they have more freedom in management D．they attract more students than others 2．The Green Charter Schools Network is established to______. A．advise teenagers to attend charter schools B．paint the school buildings in the color of green C．measure the students with the same standards D．get students involved in environment friendly activities 3．The following statements about the Network are true EXCEPT________. A．It only concerns the charter schools in the US B．It holds its first national conference in Minnesota C．It will benefit both the schools and the communities D．It promotes different schools to share their achievements 4．According to Jim McGrath,________. A．people's action plays little part in nature B．natural resources are abundant for people to use C．students should be taught to be responsible for the world D．everyone should make efforts to change the positive nature 5．What's the writer's purpose of writing this passage? A．To criticize the traditional education system. B．To encourage the students to adopt healthy eating. C．To inspire people to recycle waste from the cafeteria. D．To arouse the schools to take action to protect the earth.