tpo10綜合作文

篇一：新托福TPO 10綜合寫作詳細解析 (十)

智課網TOEFL備考資料

新托福TPO 10綜合寫作詳細解析 十)

摘要： 新托福TPO 10綜合寫作詳細解析，阿拉斯加州的海獺數量在減少

阿拉斯加州的海獺數量在減少？是環境污染？還是天敵捕食？

閱讀材料：

The sea otter is a small mammal that lives in waters along the western coast of North America from California to Alaska. When some sea otter populations off the Alaskan coast started rapidly declining a few years ago, it caused much concern because sea otters play an important ecological role in the coastal ecosystem. Experts started

investigating the cause of the decline and quickly realized that there were two possible explanations: environmental pollution or attacks by predators. Initially, the pollution hypothesis seemed the more likely of the two.

海獺是一種生活在北美西海岸從加州到阿拉斯加沿線的小型海洋哺乳動物。幾年前，阿拉斯加海岸的海獺數量急劇減少。由於海獺對於維持海岸沿線生態平衡有非常重要的作用，所以其數量下降引起瞭廣泛的關註。專傢開始研究海獺數量下降的