Unit13 we're trying to save the earth.SectionA(3a-3b)课件（39张PPT）+练习+音视频

Unit 13 We’re trying to save the earth! Section A(3a-3b)练习 一. 完成词句。 1. 鲨鱼n. ____ 2. (鱼) 鳍n. ____ 3. 科学上的；科学的adj. ____ 4. 残酷的；残忍的adj. ____ 5. 有害的adj. ____ 6. 链子；链条n. ____ 7. 生态系统n. ____ 8. 工业；行业n. ____ 9. 法律；法规n. ____ 10. 鱼翅汤 _____ 11. 处于食物链的顶端 _____ 12. 在过去的20到30年间 _____ 13. 环境保护组织 _____ 14. 健全法律 _____ 15. 鱼翅买卖 _____ 16. 但是你意识到当你每次在品尝一碗鱼翅汤时，你正在杀死一整头鲨鱼吗？ But do you realize that you're killing a whole shark each time you enjoy ____ ____ ____ ____ ____ ____ ? 17. 在过去的20到30年里，有些种类的鲨鱼的数量已经下降了百分之九十多。 The numbers of some kinds of sharks have fallen by over 90 percent ____ ____ ____ 20 to 30 years. 18. 如果我们不采取措施来阻止这种鱼翅买卖，鲨鱼可能有一天会消失。 Sharks may disappear one day if we do not do something to ____ ____ ____ ____ ____ ____. 二、根据句意及汉语提示填写单词。 1. I think it's _____ (残酷的) of them to shoot the animals. 2. With the development of _____ (工业), it will cause some pollution problems. 3. Reading in the sun is _____ (有害的) to your eyes. 4. The government has made some _____ (法律) to protect the wild animals. 5. We should use some _____ (科学的) ways to solve the problem. 三、用括号内所给单词的适当形式填空。 1. Hainan is in the _____ (south) part of China. 2. We all support his _____ (science) research. 3. This is an _____ (danger) animal. We should try to save it. 4. Smoking is _____ (harm) to your health. You must give it up. 5. In fact, about 70 million sharks are _____ (catch)and traded every year. 四、根据汉语意思完成句子，每空一词。 1. 保护海洋生态系统食物链的平衡很重要。 It’s very important to keep the balance of the _____ _____ in the ocean ecosystem. 2. 目前很多动物的数量在下降。 At present the number of many animals _____ _____. 3. 他的中指在工作时不小心被机器切掉了。 His middle finger _____ accidentally _____ _____ while working. 4. 让我们拒绝鱼翅汤吧，因为“保护鲨鱼就是保护我们自己”。 Let's _____ _____ _____ _____ _____ _____ because “to protect sharks is to protect ourselves”． 5. 听！贾森在练歌房里引吭高歌。 Listen! Jason is singing _____ _____ _____ his voice in the singing hall ?单项选择 从A、B、C、D四个选项中选择可以填入空白处的最佳答案。 (??? ) 1. It’s _____ ugly bag, but it is _____ useful one. A. a; a? ? ? ? ? ? ? ? ? ? ? ? ?B. an; an C. a; an ?????????????????? ??? D. an; a (??? ) 2. Kelly is thinking about how these old books can be put _____ good use. A. to? ? ? ? ? ? ? ? ? ? ? ? ? B. in C. on? ? ? ? ? ? ? ? ? ? ? ? ?D. at (??? ) 3. Electronic books have many _____. I think the most important one is that they don’t take up much room. A. suggestions? ? ? ? ? ? ? B. advantages C. introductions? ? ? ? ? ? D. exchanges (??? ) 4. Carla thinks it is _____ to play tricks on the disabled people. They should be respected. A. cruel? ? ? ? ? ? ? ? ? ? ? ? B. scary C. unlucky? ? ? ? ? ? ? ? ? ?D. unnecessary ( ???) 5. My shoes were really cheap. They only ____ ... ...