阅读理解。

     When you are little,it's not hard to believe you can change the world.I remember my

enthusiasm when,at the age of 12,I addressed the people at the Rio Earth Summit."I am

only a child," I told them."Yet I know that if all the money spent on war was spent on

ending poverty and finding environmental answers,what a wonderful place this world

would be.At school you teach us not to fight with others,to work things out,to respect

others,to clean up our mess,not to hurt other creatures,to share,not to be greedy.Then

why do you go out and do the things you tell us not to do.You grownups say you love

us,but I challenge you,please,to make your actions reflect your words."

     I spoke for six minutes and received a standing ovation.Some of the people even

cried.I thought that maybe I had reached some of them,that my speech might actually

spur (刺激) action.Now,ten years from Rio,after I've sat through many more conferences,

I'm not sure what has been achieved.My confidence in the people in power and in the

power of an individual's voice to reach them has been deeply shaken.

     When I was little,the world was simple.But as a young adult,I'm learning that as we

have to make choices-education,career,lifestyle-life gets more and more complicated.

We are beginning to feel pressure to produce and be successful.We are taught that

economic growth is progress,but we aren't taught how to seek a happy,healthy way

of living.And we are learning that what we wanted for the future when we were 12

was idealistic and naive (天真的)．

     Today I'm no longer a child,but I'm worried about what kind of environment my

children will grow up in.I know change is possible,because I am changing,still figuring

out what I think.I am still deciding how to live my life.The challenges are great,but if

we accept individual responsibility and make choices,we will rise to the challenges,

and we will become part of the positive tide of the change.I hope this goal will be

met through our common efforts.Thank you all.

1．The purpose of what the speaker said at the age of 12 was to________.

A．end poverty and make schools beautiful

B．find environmental answers and show off

C．focus people's attention on some social problems

D．find a wonderful place and clean it up

2．What does the underlined word "ovation" in the second paragraph refer to?

A．A long period of laughing.

B．A cold and unfriendly welcome.

C．An expression used for greeting.

D．Great applause or cheering.

3．The information in the text is presented mainly through________.

A．question and answer  

B．a personal lecture

C．cause and effect  

D．listing steps in a process

4．Which of the following best describes the speaker?

A．He is an experienced educator.

B．He is an impolite man.

C．He is a man of great worries.

D．He is a man of social responsibility.