Unit 13 We’re trying to save the earth!Saturday 星期六(Section B 3a—Self Check)一、重点短语solve the problem 解决问题；getting worse and worse 变得越来越糟糕 (Section B 3a-Self Check)二、基础复现天天练：介绍四种濒危动物 (Section B 3a-Self Check)题型体裁词数难度建议完成时间正确率阅读A 篇说明文 249 words★★★☆☆ 6 min_____/5 (Section B 3a-Self Check) Do you know some animals are in great danger because the environment for them are getting worse and worse? How to solve the problem has become a heated discussion topic. Here are some of the animals. (Section B 3a-Self Check) There are eighteen kinds of bats in Britain and all of them are endangered( 濒临灭绝的 ). The greater horseshoe bat( 菊头蝠 )is one of them. They’re endangered because people pull down old buildings and cut down trees. They have no place to live in. ① There are only about 5 ， 000 bats in the UK now. (Section B 3a-Self Check) The Amur tiger( 东北虎 )is in great danger. People kill them for their meat and fur. They also cut down trees and make them homeless②. In the 1930s ， there were only 20 of them. Then people began to realize that they should protect the Amur tiger. Now there are about 360 Amur tigers in the world. About 20 of them are in China. (Section B 3a-Self Check) People may see the mandarin duck( 鸳鸯 )on pools and lakes in Britain ， but its native home is across Eastern Asia ， in Russia ， China ， Korea and Japan. The mandarin duck is on water near forests. However ， forests and rivers are disappearing( 消失 ). It makes the mandarin duck fewer and fewer. (Section B 3a-Self Check) There are now fewer than③ 2 ， 000 pandas living in the remaining forests. Another 200 or so live in zoos or rese...
