20xx秋上海教育版英語六年級(jí)上冊(cè)module4unit12theearthperiod3ppt課件-wenkub
2022-11-30 15:51:26 本頁面
【正文】 What do you know about the Earth? We live on the Earth. The Earth is a beautiful place. There are rivers, oceans, land and forests. There are many different plants and animals too. People, plants and animals need clean water and air. Sometimes people throw rubbish into rivers and oceans. Sometimes people cut down too many trees. Smoke from cars and factories makes the air dirty. The Earth gets sick. Now people work together to keep the Earth clean and healthy. They pick up rubbish. They plant trees every year. They recycle glass and p
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