听力原文

The people who live here, the Han Chinese, comprise the largest ethnic group in the world, and their language, Mandarin, is the world's oldest and most widely spoken language.
居住在这块土地上的汉族人是世界上人口最多的民族，他们的语言普通话是世界上最古老以及使用最广泛的语言。
In the last 50 years China has seen massive development, bringing many environmental problems.
在过去的五十年，中国已经取得了长足的发展，同时也带来了诸多环境问题。
But the relationship of the Chinese to their environment and its creatures is in fact deep, complex and extraordinary.
中国人与自然环境间的关系是如此的深刻复杂与非凡。
In this programme we will look for clues to this ancient relationship and what it means for the future of China.
在这期节目中，我们将探寻这种古老的关系以及以及它对中国未来的意义。

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重点讲解

重点讲解：
1. in fact
事实上，其实；
eg. He said he did not care, but in fact he was very unhappy.
他说他不在乎，但事实上他很不高兴。
eg. In fact, I think too much, and I should lighten myself of it a little.
事实上我确实想得太多了，我应该让自己放松一点。
2. look for
找；寻；
eg. Honestly, I think sometimes people look for meaning where there just isn't any.
老实说，我觉得人们总是在寻求一些根本不存在的意义。
eg. Upon receiving news of the pending cancellation of his contract, he began to look for a new job.
他收到合约即将被解除的消息时，便开始找新工作。
3. a clue/clues to
线索；提示；
eg. Geneticists in Canada have discovered a clue to the puzzle of why our cells get old and die...
加拿大的遗传学家已经发现了解开细胞衰老、死亡之谜的线索。
eg. Dr. desai searched online for clues to the problem.
德赛医生到互联网上去搜索解决这个问题的线索。