精选优质文档-倾情为你奉上Unit 6 Design李仕才一、阅读理解。The Amazon basin region is home to about 2.5 million insect species，tens of thousands of plants，and some 2 000 birds and mammals.To date，at least 40 000 plant species,3 000 fish,1 294 birds,427 mammals,428 amphibians，and 378 reptiles have been scientifically classified in the region.One in five of all the birds in the world live in the rainforests of the Amazon.The warm wet forests have been in existence for 55 million years，and thrived even duri
