1. The destruction of our natural resources and contamination of our food supply continue occur, largely because of the extreme difficulty in affixing legal responsibility on those who continue to treat our environment with reckless abandon. (1999. 阅读. 6. Text 2)

【译文】破坏自然资源、污染食物供应的现象仍时有发生，很大程度上是因为难以给那些继续肆无忌惮破坏环境的人限定法律责任。

【析句】复合句。主句是The destruction of our natural resources and contamination of...contimue occur。largely because of the extreme difficulty in...on those是短语because of+宾语等内容作状语表示原因。在those后who continue to treat...作定语从句修饰those。

2. Attempts to prevent pollution by legislation, economic incentives and friendly persuasion have been net by lawsuits, personal and industrial denial and long delays—not only in accepting responsibility, but more importantly, in doing something about it. (1999. 阅读. 6. Text 2)

【译文】通过立法、经济刺激和友好劝说来防治污染的努力，却被法律诉讼、个人和企业拒绝承担责任、长时间的拖延所抵消——不仅体现在接受责任方面，更重要的是采取措施方面。

【析句】主句是Attempts to prevent pollution by legislation,economic incentives and friendly persuasion have been net by lawsuits...long delays,可以看出，这句话用了很多并列的抽象名词表示动作，句子虽然长，但仍然是简单句。破折号后的内容是对前句attempts的进一步解释, in accepting responsibility和in doing something about it两方面的efforts。大学英语六级答案

3. The Times newspaper agrees, complaining that quality has suffered as student numbers soared, with close tutorial supervision giving way to "mass production methods more typical of European universities". (1999. 阅读. 6. Text 3)

【译文】《泰晤士报》对此有同感，它报怨道，由于学生人数激增，教学质量受影响，因为个别指导不得不让位于“欧洲大陆国家高校里惯有的大规模生产方式”。

【析句】主句The Times newspaper egress,complaining that...是动名词complaining+that宾语从句作定语修饰TheTimes newspaper。而宾语从句中，主句是quality has suffered,as student numbers soared是时间状语从句，with close tutorial supervision giving way to...是with引导伴随状语。