题型：阅读选择 题类：真题 难易度：普通
山东省菏泽市2021年中考英语真题试卷
Think about what you like to wear on the weekend. There's a good chance that you like to put on a pair of blue jeans. At any moment, about half of the world's population is wearing jeans. But according to a new study, our love for jeans may be bad for Earth. Denim (牛仔布)might be putting some sea animals in danger.
Every time we wash our jeans, tiny bits of denim will flow out of our washing machines, down into the world's rivers, lakes and oceans.
You might wonder: Isn't denim made of cotton, a natural material? How can it become a danger to nature? Well, in the process of making jeans, denim is treated with many types of man-made chemicals. Some improve its durability (耐用性)and feel; others give jeans their blue color.
Scientists studied the Great Lakes in America and the Arctic Ocean in northern Canada. They found denim waste in all of the samples (样本)they had collected. It is feared that the harmful chemicals in denim have spread far and wide. Scientists aren't yet sure how these chemicals might harm animals.
In the study, the scientists also washed jeans to see how many bits of denim each pair would drop per wash. The answer was frightening: About 50,000. Not all of them make their way into the environment. Wastewater treatment plants hold back 83 to 99 percent of them. This may sound pretty good, However, one percent of 50,000 bits are still 500 per wash. Now think about the number of jeans around the world and the times each of them gets washed. As a result, a large amount of denim waste still gets into the environment.
Does this mean we shouldn't wear jeans? Probably not "We need to buy fewer jeans and only wash them when we truly need to do it," says Sam Athey, one of the scientists. "You don't need to wash your jeans after having worn them only a couple of times."
①To save the materials and make more money.
②To improve denim's durability and feel.
③To make jeans blue.
（自然生态）If you travel in New Zealand， you may find some very interesting things. It is called "New Zealand Four Strange Things".
Have you ever seen that cows are lined up？ New Zealand is so large. It is impossible for people to milk cows by hand. So the farmers trained the leading cow to take the cows to the milking station twice a day. The leading cow has a sensor（传感器）on its head. When it is time for milking， the sensor warns the leading cow to take the lead. |
Horses are mainly raised for viewing（观赏）and racing， so the coat color is very important. Wearing sunscreen（防晒）clothes on horses can avoid the harm from the sun. The clothes on horses are filled with weights that are the same weight of the rider. When the weights are replaced by the rider during the race， "the horses will be used to running with weights" just like the sportsman running with sandbags. |
Sheep in New Zealand used to have tails. Because they poop（排便）when they're born， grass flies are interested in them. Grass flies lay their eggs in the tails of the baby sheep， causing illness and death. Then people tie their tails. As time passes， the sheep become tailless. This improves the survival rate（成活率）. |
New Zealand's alpacas（羊驼）were introduced from South America. They are quite different from two－humped camels（双峰驼）. An alpaca weighs about 55 kg to 65 kg. Its shape is like a sheep. Only one grown－up male（雄性）alpaca can be found in each group. It is the leading one. Alpacas are gentle， clever and human. |
| Found Thing: A watch Color: Black Name: Cindy Telephone number: 359-5934 |
| Lost I'm Lily. I lost a baseball. Please call Bob or me. My phone number is 485-3982. Bob's telephone number is 635-5912. |
| Found Is this your jacket? It's a blue jacket. And an ID card is in it. My name is Mike. My telephone number is 239-5178. |
| Lost I lost my pencil box. It's red. My name is Mary. My telephone number is 495-3539. |
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