My sister Alice and I have been trying to get people to stop dropping cigarette（香烟）butts（烟头）for seven years．One day，we were walking in our hometown and saw hundreds of cigarette butts on the ground．They made the town look so ugly that we decided to start a group to make people dropping butts．We called it "No Butts About It"．

At first，we drew pictures with "The Earth is not your ashtray（烟灰缸）"written on them．We put the pictures around our hometown﹣in parks，by beaches，and along roads．We wanted to make people understand that dropping butts hurts the environment．Most smokers don't think that dropping butts hurts the Earth．But it does，and all rubbish does!

Later，we wrote to companies and asked them for money to help us．We used the money to buy ashtrays to give to smokers．We wanted smokers to carry the ashtrays with them so they didn't have to drop butts．

At the moment，we are trying to get cigarette companies to put an ashtray in each pack of cigarettes．Some companies want to do it．Many people have started to join our group since it began．Today there are 45 other "No Butts About It" groups in America．

Now there even groups in England，Australia，and India! Many newspapers have written about my sister and me over the last seven years．And we have won many prizes for what we do．But we are not interested in prizes．We just want to make the Earth a better and cleaner place for animals，plants and people． One day，it will be．

51．What did the writer think about the cigarette butts in the first place？ 　　

A．	They made the town smelly．
B．	They made the town unhealthy．
C．	They made the town dirty．
D．	They made the town poor．

52．What does the writer do with the cigarette butts？ 　　

A．	Give ashtrays to the smokers．
B．	Stop people buying cigarettes．
C．	Pick up the cigarette butts．
D．	Win prizes for starting groups．

53．The writer put the pictures with "The Earth is not your ashtrays" 　　．

A．	in hospitals
B．	on buses
C．	along rivers
D．	by beaches

54．From the passage we can know that 　　．

A．	no companies wanted to give money to them
B．	The writer believes that the Earth will be a better and cleaner place
C．	There are only 45"No Butts About It"
D．	The writer likes to be on newspapers and win prizes

55．Which is the best title for the passage？ 　　

A．	Save our Town From Cigarette Butts．
B．	Buy Yourself An Ashtray．
C．	Cigarette Butts Also Destroy Other Countries．
D．	No Butts Prize．