读地质剖面示意图，回答下列各题。

综合探究。
         一座城市崛起的标志不仅是GDP惊人的数字和不断增长的高楼高度与密度，更看重的是其厚重的人文底蕴，而“码头文化”是很久以前人们对重庆文化的定位，如何将重庆这座年轻直辖市从“码头文化”变成“文化码头”，我想，需要我们共同努力。

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案．

    One night I saw something on the news that made me sad．It was1a group of homeless(无家可归的)people sleeping outside in the cold．

    So I decided to start a2to raise many for the homeless．I called it the Rock Club,At the beginning,there were only five members in it，3that quickly grew to about twenty．I didn't have to ask anyone if they wanted to be a4．In fact，they came up to me and asked me if they could5the club!

    We spent all of our free time on rock painting．We painted animals,flowers and even the names of sports teams on our rocks．We'd go around the school to6people who would buy them．By Christmas，we had raised thirty．three dollars and then we gave the money to a homeless shelter(收容所)in town．We all felt7that we could do something to help the homeless．

    A few days later,a newspaper reporter(记者)came to our school to8with us about our club and took a photo of us．The photo and article(文章) 9in the newspaper the next day．Later,10school,joined by three other schools，started a project for kids to help homeless shelters．

    Something as simple(简单的)as some painted rocks and a few caring kids made me know that I don't need much to make a difference．

 如图是花的结构示意图，请据图回答：