单选题 As you know, "being green" means that you care about the environment (环境) and that you do what you can to help the Earth. Recycling (回收利用) paper and cans, reducing waste, and protecting wildlife are all examples of "green" activities.
This special green issue of National Geographic Kids is devoted to environment. In fact, you're being green simply by reading it. When you're finished, you'll know a lot of things you probably didn't know at all. And you'll be a greener citizen with a strong sense of environmental protection.
In this issue(一期杂志) you will discover how you can help the Earth face its five biggest environment problems. Animal behavior specialist Jane Goodall shares new ideas about how you can help wildlife. Answer actor Leonarde DiCaprio's call to action to help the environment. Just how green are you? Answer actor questions on Page 10 to find out. You may win a trip to Orlando, Florida. And there's a special pullout poster to hang on the wall.

单选题 The writer's main purpose in writing this text is to ______.
A. persuade the reader to waste less
B. explain the meaning of the word "green"
C. encourage people to buy this issue
D. call on people to protect the environment

【正确答案】 C

【答案解析】[解析] 主旨题。文章的第一段叙述了什么是绿色环保，什么样的活动才是绿色环保的。第二段讲这期专刊对于绿色环保的特别之处，就是只要你阅读了它，你就为保护环境贡献了一份力量，因为你会了解许多以前不知道的事情，知道了如何做才能变成一个好公民。

单选题 This issue is called "green" because of ______.
A. the subject discussed
B. the color of the pullout poster
C. the kind of paper used for the magazine
D. the wild animals mentioned in the issue

【正确答案】 A

【答案解析】[解析] 细节题。根据第二段第一句，这期特刊是专门讨论环境的，可知这期杂志之所以成为绿色环保就是因为主题是绿色环保。

单选题 In this issue, we may probably find an article about ______.
A. how to travel to Florida B. a role Leonardo played in a film
C. new methods of feeding animals D. how to protect wildlife

【正确答案】 D

【答案解析】[解析] 推理题。根据第三段第二句可知读者在这期杂志里可以看到保护野生动物的文章。