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1、Unit 4 Language Building-upAnswer keys第一页，共8页。Task 1 Collocationn1.green movementn2.protected areasn3.extinction of animals and plantsn4.wild fish stocksn5.make clean powern6.save resources第二页，共8页。n7.培育生物多样性8.控制污染9.阻止对生态(shngti)体系的破坏n10.扩大清洁产业n11.集体世界观n12.生态(shngti)经济第三页，共8页。Task 2 Signpost Language
2、n1.Embedding a narrative that moves us on from protecting nature from people to protecting nature for people is an essential part of this reframing.(Para.6)nIf such a narrative is to gain practical effect,then looking after nature must urgently be seen as not only an environmental challenge,but also
3、 an economic one.(Para.7)第四页，共8页。nThe author manages to bring in a new topic and maintain coherence by repeating keys words such as narrative,nature.第五页，共8页。n2.So long as we continue to travel in two directions at once,promoting environmental goals on the one hand while on the other directly contrad
4、icting that with measures to achieve more economic growth,the longer we will fail to make real progress.(Para.7)第六页，共8页。nWhen it comes to economics and ecology there is plenty of good thinking already done.(Para.8)nThe author manages to bring in a new topic and maintain coherence by repeating key words such as economic,economics.第七页，共8页。Task 3 Formal Englishn1.unchangeable;increasingn2.controln3.effort;charitablen4.pleasant plicatedn6.changen7.Changing 8.important第八页，共8页。