人教版新课标高中英语 2019-2020学年 必修二 Unit 1　Cultural relics 单元测试 含答案详解

单元综合测评unit 2 Book 2 (时间：100分钟 分值：120分) 　　　　　　　　　　　　 第一部分　阅读理解(共两节，满分35分) 第一节(共10小题；每小题2.5分，满分25分) A Thirty years ago, if you looked down from a plane at the east coast of Australia, you would be greeted by the breathtaking beauty of the Great Barrier Reef(大堡礁), the world's largest coral reef.It stretched for over 2，600 kilometres in the blue sea, containing countless corals and small islands.It was listed as a UNESCO World Heritage Site in 1981. However, this natural wonder of the world is being taken away from us.Coral cover in the Great Barrier Reef has dropped by more than half over the last 28 years, The Guardian reported.“If the trend continues, coral cover could halve again by 2022，” said Peter Doherty, researcher at the Australian Institute of Marine Science (AIMS)．So unless we start acting now, there won't be any “heritage” left in the future. Coral reefs are an important part of the ocean's ecosystem.They are a source of food, and act as protection for young fish.But in the