合成dTMP所需甲基由下列哪个提供？（）A.N5-CH3-FH4 B.N10-CHO

用1155个大小相同的正方形拼成一个长方形，有（）种不同的拼法。

A．7

B．8

C．9

D．10

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.

（2002年）　　赵某孤身一人，因外出打工，将一祖传古董交由邻居钱某保管。钱某因结婚用钱，情急之下谎称该古董为自己所有，卖给了古董收藏商孙某，得款10000元。孙某因资金周转需要，向李某借款20000元，双方约定将该古董押给李某，如孙某到期不回赎，古董归李某所有。在赵某外出打工期间，其住房有倒塌危险，因此房与钱某的房屋相邻，如该房屋倒塌，有危及钱某房屋之虞。钱某遂请施工队修缮赵某的房屋，并约定，施工费用待赵某回来后由赵某付款。房屋修缮以后，因遏百年不遇的台风而倒塌。年末，赵某回村，因古董和房屋修缮款与钱某发生纠纷。请回答下列问题：

（2002年）赵某对钱某擅自出卖古董之行为，可提出何种之诉？

南亚季风形成的最主要原因是（）。

A．海陆热力差异

B．行星风带的季节性位移

C．地形动力作用

D．冷暖海流交汇

辅修专科专业结业总学分不得少于（）分，辅修本科专业结业总学分不得少于60学分。

A.30

B.40

C.50

D.60