题型：阅读选择 题类：常考题 难易度：普通
浙江省湖州市吴兴区2017-2018学年上学期九年级英语期末考试试卷
B
You probably know many of the things that you can do with the hundreds of different muscles（肌肉） in your body. But have you ever thought about how the muscles in an animal's body are different from yours? An animal's muscles are made to do the things that are the most important for its life.
Lions are hunters. They depend on their ability to catch other animals. Lions must be fast in order to catch their prey(猎物). The powerful muscles in their back legs allow them to run at speeds of more than 30 miles per hour. They can also jump a distance of more than 35 feet. The strong muscles in their front legs help them catch their prey.
Snakes also use their muscles for hunting prey and for movement, but their muscles work in very different ways than lion's do. Because snakes do not have any legs, they use their muscles to push against the ground or other objects to move themselves forward. Their muscles also allow them to eat things that seem much too large. For example, a snake may eat an egg that is larger than the width of its body. How does this happen? The snake's strong neck muscles work together to push the egg down the mouth.
The elephant's long nose has a lot of muscles. Scientist believe that the nose alone has more than 100, 000 muscles! This is because the elephant uses its nose much in the same way that people use their hands and fingers. Even though the nose is large, it can perform surprisingly tasks. For example, an elephant can pick up a tree by its roots or even to lift a baby elephant.
The great muscles of these animals seem pretty unbelievable. But the muscles in your body work exactly the way you need them to. After all, it might be fun to be able to jump a distance of 30 feet, but as a human being, there is just not much need for it.
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I'm sure you all know how important recycling is. Recycling is when you take old things and turn them into new things. It sounds like magic. But it's actually very scientific.
| Material | The first thing you have to do is to collect items that can be recycled. Only certain materials can be recycled. These include things made out of paper, metal, glass and plastic. |
| Daily things | Can you think of everyday items made of these materials? Soda cans are good example. They are made out of metal. Magazines and newspaper are made out of paper. So are cereal boxes. Some bottles of juice are made out of glass. Bags and yogurt containers are made out of plastic. There are many things that can be recycled. |
| Loop | These things are usually stamped with the recycling loop. It has 3 arrows that go in a triangular (三角形) circle. This shows that cycle (循环) continues. Items are thrown away but continue their lives as something else. |
| Process | Let's go back to the process of recycling. ①The items are put in a recycling bin. ②A truck carries the items to a recycling plant. ③The materials are separated and squashed (被压扁成) into square cubes. ④Companies buy and turn them into new products. |
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