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⑴不杀害动物;⑵不砍伐森林;⑶……
We all know that animals are our good friends. But there are still many people killing animals for money and many kinds of animals are dying out now. We must do something to protect them. First, we mustn't kill
We need a large quantity of food and water to save these homeless people.
2000~2004年五、十月份大气中的二氧化碳含量统计表