C
My name is Daniel. I live near Tennessee River(田纳西河). When I was seven, I found some plastic bottles and other rubbish could be bad for animals in rivers. Now I'm thirteen, and I am working to keep rubbish out of rivers.
The Tennessee River is dirty because people throw plastics and other rubbish into it. And I want to do something to help stop the pollution(污染). For example, I do some river cleanups with others. We go along the river. We often pick(捡) up a lot of rubbish, such as old toys and plastic bags. Doing cleanups makes me really happy because I know I'm making a difference and saving lives — not just animal lives, but human(人类的) lives as well. I think it is meaningful(有意义的).
Last year, I started the Cleanup Kids with my friends to call on(呼吁) kids all around the world to pick up rubbish. So far, we have picked up over a million of pieces of rubbish in all.
We're never too young to change the world. Kids are a small part of the world, but we are 100% of the future(未来).
根据材料内容选择最佳答案。
()11. Why is the Tennessee River dirty?
A. Because people throw rubbish into it.
B. Because many animals and plants live in it.
C. Because children like playing water in the river.
D. Because there are many people living by the river.
()12. What does the writer think of doing some river cleanups?
A. Boring.
B. Meaningful.
C. Interesting.
D. Dirty.
()13. When did Daniel start the Cleanup Kids?
A. At 7.
B. At 12.
C. At 13.
D. At 14.
()14. Which of the following is TRUE?
A. The writer starts the Cleanup Kids to clean up the Tennessee River.
B. The Cleanup Kids is a group to call on kids to pick up rubbish.
C. Children pick up rubbish and send the pictures of it to the Cleanup Kids.
D. The writer thinks children are too young to change the world.
()15. What is the text mainly about?
A. Why the Tennessee River is dirty.
B. Who starts the Cleanup Kids.
C. How to be a member of the Cleanup Kids.
D. What kids can do to protect the earth.

11. A 由第二段第一句可知，田纳西河脏的原因是人们把垃圾扔到河里。
12. B 由第二段最后一句可知，作者认为清理河道是有意义的工作。
13. B 由第一段最后一句和第三段第一句可知，Daniel 12 岁时创办了这个组织。
14. B 由第三段第一句可知，Cleanup Kids 号召孩子们捡垃圾。
15. D 通读全文可知，本文通过 Daniel 参加清理河道工作，并创办 Cleanup Kids 组织，号召全世界孩子捡垃圾，以此来表明孩子也能为保护地球做贡献。

【分析】
这是一篇记叙文类阅读理解，解题可采用“题干定位法”：
1. 第11题询问田纳西河脏的原因，直接在原文中寻找描述河流污染原因的语句即可；
2. 第12题考查作者对清理河道的看法，重点关注文中表达作者主观感受的内容；
3. 第13题需结合作者当前年龄和创办组织的时间（去年）进行简单计算；
4. 第14题为正误判断题，要逐个将选项与原文内容比对，排除不符合的选项；
5. 第15题找主旨，需通读全文，总结文章核心内容，明确作者通过事例想传达的主要观点。
【解析】
11. 定位到第二段第一句“The Tennessee River is dirty because people throw plastics and other rubbish into it.”，可知田纳西河脏的原因是人们往里面扔垃圾，故选A。
12. 定位到第二段最后一句“I think it is meaningful(有意义的).”，句中的“it”指代前文的“doing cleanups”，所以作者认为清理河道是有意义的，故选B。
13. 根据第一段“Now I'm thirteen”和第三段“Last year, I started the Cleanup Kids”，可计算出去年作者12岁，故选B。
14. 定位到第三段第一句“I started the Cleanup Kids with my friends to call on(呼吁) kids all around the world to pick up rubbish.”，可知Cleanup Kids是一个号召孩子们捡垃圾的组织，选项B表述正确；A选项说其目的是清理田纳西河，与原文不符；C选项文中未提及；D选项与最后一段“We're never too young to change the world.”相悖，故选B。
15. 通读全文，文章讲述了Daniel从7岁意识到垃圾对河流动物的危害，到13岁时参与河道清理、创办Cleanup Kids组织号召全球孩子捡垃圾的故事，核心是说明孩子也能为保护地球做贡献，对应选项D；A、B只是文中部分内容，C文中未提及，故选D。
【答案】
11.A；12.B；13.B；14.B；15.D
【知识点】
细节信息查找；主旨大意判断；简单推理计算
【点评】
本文通过Daniel的亲身经历，传达了“孩子也能为环保做贡献”的理念，兼具教育意义。解题时需紧扣原文，通过定位关键语句快速找到答案，同时注意细节比对和主旨提炼，这是记叙文类阅读理解的常用方法。
【难度系数】
0.7