答案：D　文章结构题。全文的内容结构为：首段概括介绍非洲象对非洲大草原生态系统的巨大影响，第二、三段具体说明在哪方面，怎样影响了生态环境，第四段科学家对非洲象已成为濒危物种的担心呼应首段的内容，故选D项。

　　Ⅱ.七选五

　　根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　If you were to see a cold, hungry cat in front of your house, would you feed it or walk away? Most people would walk away instead of taking the time to make sure the cat is okay. __1__ They usually have so much to deal with in their daily life as to ignore their surroundings.

　　Now here's another question: If you see a group of kids hitting and abusing an animal, would you stop them? __2__Some people do not believe that animal abuse is a big issue.

　　Every day animals are abused in their homes or on the streets. It seems as if politicians do nothing to stop this issue. Everyone is worried about education and global warming. What about animals? __3__ These are the rights that allow animals a place to stay, a shelter if they have no place to stay, the right not to be abused and many other rights. Are we taking away animals' right by not giving them a place to stay? Yes, we are. Since I was born, my mother, my sister and I have taken in over fifty homeless cats, fed them, cleaned them and sent them to good families.

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