重大版选修6 Unit 2 Troublesome Travelers warming up（共15张PPT）

课件15张PPT。Protecting Our Homeobjectivepreserve troublesome alien
wildlife lead to importTo talk about invasion of foreign species with the words:water
hyacinth
['hai?sinθ ] American white mothssmall lobsterthe Brazilian tortoiseAll of them are alien species to China.Write a number from 0 to 3 next to the sentence, depending on your own attitude.(0= strongly disagree; 1= disagree;
2= agree; 3= strongly agree) There are far from enough conservationists in the world.
We should preserve nature for everyone to enjoy.
It’s better to see wildlife in nature rather than in a zoo.
It isn’t a good idea to bring strange animals back from abroad.
I walk or ride a bicycle to school quite often.
I enjoy walking in a park.7) I don’t use a lot of water when I take a bath or shower.
8) I would contribute money to the organizations that preserve wildlife.
I never throw trash on sidewalks or in streets.
10)Usually, I turn off the lights when I leave a room.Now add up the numbers you have written down, then go to the comments on P16 to see what general attitude you take toward the environment. How to protect the environment in your opinion?Chinese Gold FishAlien species in HawaiiSome of the earliest aquatic introductions occurred during the 1800’s and accompanied the first Asian immigrants to Hawaii. The Chinese catfish, goldfish were among the first exotic freshwater animals brought to Hawaii. Most of these species were brought in for food, but a few, like the goldfish, were also brought in for ornamental (观赏用的) purposes. How do the alien species influence the environment?Discussion Alien species can reduce water quality and quantity by increasing erosion and this, in turn, degrades near-shore marine ecosystem like coral reefs.
Native species succumb to the sheer magnitude of new ecological challenges imposed upon them.HomeworkWhat’s your opinion towards alien species? (120词左右）
参考词汇：
preserve troublesome alien
wildlife import lead toPreview Learn the words on 116 by heart.
Read the text and mark out the sentences you don’t understand.Thanks!