stepbystep3000第二册unit8标准答案.docx

1、stepbystep3000第二册unit8标准答案Unit 8Part IA:1.Greenpeace / attitudes and behavior / environment / peace2.World Wildlife Foundation / 1961 / a future / nature3.Live Earth / climate crisis4.Green School Project / schools / waste / landfill5.Climate Change / knowledge / measures6.Friends of the Earth / net

2、work / activist groups / urgent7.Environmental Bureau / 143 / 31/ sustainable 8.Foundation / oceans, waves and beaches / 50,0009.Green Building Council / designed, built and operated / responsible, healthy10. the Alliance to Save Energy / costs / greenhouse gas emissions11.The Earth Organization / c

3、onservation / rehabilitation /plant and animal12.Trees, Water &People / natural resources / well-being13. American Forests / restore and enhance / filter / remove / homes14.The Global Amphibian Assessment / status / 5,918 / 600 / 60 15.Solar Energy Society / technologiesB1.food / doesnt / packaging2

4、.vegetables / dont / chemicals3.Save / water4.wont / forever / earth or sea 5.bottles / once / bank6.paper / recycled /7.Avoid 8.unleaded petrol9.made from / protected10.public transportation11.wood / rainforests12.aerosols / havent 13.Dont / plastic boxes 14.batteries / little / 50 / energy 15.ligh

5、ts / using 16.conversation / danger17.25% / rubbish18.old people / homes / energy 19.Visit / zoosPart II蝾螈 / 蚓螈A:1.the atmosphere / the climate / irreversible2.everybodys life / activities / real simple / accessible / everyday people / do a lot3.one step / conscious about / energy / fuel efficient /

6、 light bulbs / recycling B: 1.planting single tree2.deflate Greenhouse Effect / take CO23.real simple activities / accessible to people / citizens / do a lot4.clean up CO2 / improve environment / neighborhoods attractive5.a variety of personal actionsCampaign California Re-Leaf as in L-E-A-F was kic

7、ked off recently with a party in San Franciscos Washington Square Park thrown by a coalition of seven urban forestry groups. The focus of the party was the planting of a single tree, the first of 20 million to be planted in 40 Californian cities over the next decade. The tree planting campaign is an

8、 attempt to deflate whats been called the Greenhouse Effect. Scientists believe that the earth is getting warmer because of an acumulaiton fo carbon dioxide in the air. Trees take carbon dioxide out of the air. Martin Rosen is the director of the Trust for Public Land, the organization that is coord

9、inating the state-wide tree planting effort. “Time is not neutral. We are so rapidly depleting the atmosphere, we are so rapidly changing the climate, that unless we start now the situation may well become irreversible.” Some movie stars were on hand for the tree planting ceremony. Actor Peter Cyote

10、 served as the master of ceremonies. “Unless the environmental movement comes into everybodys life, in real simple activities, its not going to work. Planting a tree is real simple. So I wanted to participate in something that was really accessible to the citizen, just to everyday people, to childre

11、n. So that as citizens we can do a lot” After Peter Cyote introduced a few speakers and a couple of songs were sung, the ceremony moved over to a corner of the park where a group youngsters planted a Cooper Beech tree. Isobel Wade is the state coordinator for Campaign California Releaf. Wade says th

12、e tree plantings are important because they will help clean up the carbon dioxide in the atmosphere, improve the environment and make neighborhoods more attractive, but Isobel Wade cautions it isnt enough. “Its one step in a combination of things. The other kinds of things that we can all be doing a

13、re being much more conscious about how we use energy in our home, whether were buying - ah -fuel efficient cars and products, whether were using Styrofoam when we dont have to be, -ah - whether were turning off light bulbs when we - ah leave the room - um - and just a variety of personal actions lik

14、e recycling that we need to start thinking about and doing more.” Isobel Wade also says shed love to see everyone in Californias urban areas take the time to plant one tree and take care of the ones that are already growing.Part IIII headache Not easily break downII. PBS A: contact / microorganisms

15、/enzymes / smaller pieces / into water &CO2B1.safer 90% / degraded / in 90 days / shorter / in a dump2.more heat resistanta.melt at 60 centigrade(Celsius)b.shape retained up to 100 centigradeC: disadvantage More expensive than ordinary plastic / price 20% higherIII ApplicationA: already startedB: To

16、 be popularized C: role Plastic food containers & tableware / road signs / team cheering equipment (e.g. horns / mini flags / trash bags / umbrellas / eyeglass frames)原文： When you go to the supermarket, can you resist using plastic bags? For lot of us, probably wont. what you eat out? Can you guaran