完形填空。Next week our class is going to a rainforest to have a special biology class. We went online and searched for something about the 1 of plants. We are sharing the information with each other now.
Jack " Plants 2 have great powers. One of their greatest powers is that they can 3 oxygen. They not only give us the oxygen we 4 , but also help to keep the balance of gases(气体平衡) on earth. "
Lisa " Plants can reduce(减少) air 5 . They take in harmful(有害的) gases in the air and let oxygen back into the sky. This way, they help to make the air 6 . Also, plants can reduce noise pollution by taking in and reflecting sound waves(反射声波). "
Tony " More 7 , plants can produce food for us. Through photosynthesis(光合作用), plants turn 8 , water and carbon dioxide(二氧化碳) into nutrients that people and animals need for their living. 9 plants, our food chain would break down. "
Mary" Plants can be used to make medicine for us. Many Chinese herbal medicines are from 10 . And modern science is looking for new medicine from plants. Plants help to keep us 11 and live a longer life. "
Dave " Plants help to make us feel great. 12 sometimes it's boring to stay in nature full of plants, it makes us feel relaxed and happy. Going to the 13 world to find some plants often can make us feel relaxed and forget worries. It's good for our body and 14 . "
Plants really 15 us a lot. By understanding the powers of plants, we can know how important plants are better. Then we will try to protect them for future uses.