A:The pictures of Yellowstone National Park are so beautiful.
B:I have been there. It's like heaven.
A:Why such national parks are built?
B:To protect endangered species and to preserve biodiversity.
A:I see. Because biodiversity is not only vital in supporting human life on Earth,but essential for ecosystems to respeond flexibly to damage or change.
B:But human activities have greatly reduced biodiversity around the wrold.
A:Fortunately,several nations have laws protecting endangered species,and some build national parks to preserve biodiversity.
B:To protect the environment of the earth,we really have a lot of things to do.
A:黄石国家公园的照片真漂亮。
B:我去过那儿,那儿真像是人间天堂。
A:为什么要建造这样的国家公园呢?
B:是为了保护濒危物种,并保持生物的多样性。
A:我知道了。因为生物的多样性不仅对地球上人类的生存至关重要,对生态系统灵活应对破坏或改变也是必要的。
B:但人类的活动极大地破坏了世界的生物多样性。
A:幸运的是,有些国家已制定了法律来保护濒危物种,还有些国家建造了国家公园来保持生物的多样性。
B:想要保护地球的环境,我们确实有很多事要做。
英语对话能使人在短的时间内学会实用的会话,尽量以浅显的方式介绍,即使平常不太有机会接触英语的人,也可一句一句地学习会话。建议大家多说多练,或者参加韦博英语培训,快速提升英语水平。