【题目】A dog might be man’s best friend, but my dogs are more like my kids! I think everyone should experience the unconditional love of a dog, but owning one is not for the nervousness. It’s work—especially when it comes to the job of cleaning up their waste. When you clean up after your dogs, your neighbors will love you for keeping those smelly landmines out of their yards. But there are even bigger benefits. You’ll not only be doing your part to keep bacteria out of your yard and neighborhood, you’re also keeping harmful microorganisms away from the drinking water supply.
There are more than 77 million pet dogs in the United States and their waste is found in backyards, neighborhood parks, and the green areas that frequently line small waterways. When you don’t clean up after your dog, heavy rain can carry bacteria from the waste into drains. Dog waste left in parks and other such places can be swept directly into nearby streams. This affects the quality of the water in our streams. These small channels often empty directly into our local drinking water supply or the water where we boat or fish.
Dog waste contains harmful microorganisms like roundworms that can be passed onto humans. This is why dog waste should not be used as fertilizer around your home. And it won’t fertilize your yard either if you leave it behind like other types of fertilizer. Dogs don’t eat the same kinds of natural material that cattle, horses or even elephants eat. The waste from those animals is actually beneficial for your yard and garden.
You should always pick up after your dog and throw the waste into the trash can. Some smaller cities might prefer the waste to be washed down the toilet, but in cities where there are many dogs, it’s best to send the waste to the landfill.
When you properly deal with your dog’s waste, you’ll be doing your part to keep harmful bacteria out of your yards, your neighborhoods and your drinking water.
【1】What is the first paragraph mainly about?
A. The author’s dog is as lovely as a child.
B. Dog waste can pollute the environment.
C. Owning a dog is a troublesome experience.
D. Dog waste is more harmful than landmines.
【2】Which shows the right organization of the passage?
（P1 ＝ Paragraph 1; P2 ＝ Paragraph 2; P3 ＝ Paragraph 3; P4 ＝ Paragraph 4; P5 ＝ Paragraph 5）
【3】Which of the following statements about dog waste is true?
A. It makes a kind of natural fertilizer of high quality.
B. The microorganisms in dog waste are helpful to water.
C. It is better to wash dog waste down a toilet or bury it in a landfill.
D. Dog waste is more beneficial to soil than other kinds of animal waste.
【4】What is the main purpose of this passage?
A. To scold those who ignore their dog’s waste.
B. To introduce ways of cleaning up dog waste.
C. To warn dog owners about the danger of dog waste.
D. To argue it is the duty of the owners to clean up dog waste.
在线课程【答案】
【1】B
【2】A
【3】C
【4】D
【解析】
试题分析：文章讲述了狗的清洁问题是很重要的，这不仅影响邻居、环境还有水资源。建议狗的主人要处理好狗的粪便。
【1】B 推理判断题。第一段的主要目的是说明狗粪便污染水源，在第二段还有展开。文中说狗很可爱目的是引起话题，地雷只是狗粪便的比喻说法，养狗让人伤脑筋也不是第一段的主旨。故选B。
【2】A 文章结构题。第一段总述狗粪便的危害；第二段和第三段进一步阐述，第四段提出正确处理狗粪便的方法，最后一段再次总结清理好狗粪便的好处，总结全文，即总—分—总的结构。故选A。
【3】C 细节理解题。根据文章第四段You should always pick up after your dog and throw the waste into the trash can. Some smaller cities might prefer the waste to be washed down the toilet, but in cities where there are many dogs, it’s best to send the waste to the landfill.可知。故选C。
【4】D 主旨大意题。本文通过多方论述，说明狗主人应当很负责任地清理掉狗粪便，否则就会污染水源，危害人类的健康。故选D。