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团GLOBAL ENGLiS团The senior author,Prof Simon Lewis,said,芳美在报社"Focusing on a few hundred common tree species oneach continent,rather than the species that we knowEARNING ENGLISHalmost nothing about,can open new ways tounderstand these precious tropical forests.However,this focus on the commonest species should not take报纸课件away from the importance of rare species.Rare新课程species need special attention to protect them."高二江苏(N)第40期A版A2READING COMPREHENSIONC1.What has the new study found?Just 2%of rainforest tree species account forA.Rainforest cover is rapidly declining all50%of the trees found in tropical(热带的)forestsover the world.across Africa,the Amazon and Southeast Asia,a newB.The diversity of rainforest species aroundstudy has found.Mirroring patterns found elsewherethe world is decreasing.in the natural world,researchers have discoveredC.The diversity of rainforest species aroundthat a few tree species dominate the world's mostthe world follows the same rule.rainforests,with thousands of rare species making upD.Common species in rainforests around thethe rest.world are threatening rare species."Our findings have great implications forunderstanding tropical forests.If we focus onB 2.What is the significance of the new studyunderstanding the commonest tree species,we canaccording to Declan Cooper?probably predict how the whole forest will respondA.It introduces new species into the rainforest.to today's rapid environmental changes,"saidB.It helps the rainforest to fight climateDeclan Cooper,the lead author."This is especiallychange.important because tropical forests contain a largeC.It saves some rare tree species in theamount of stored carbon,and are a globallyrainforest.important carbon sink."D.It updates records of tree species in therainforest.The team of scientists demonstrated that whileAfrican tropical forests have fewer total speciesA3.How do African tropical forests differ fromcompared with the Amazon and Southeast Asia,theirthose in Southeast Asia?diversity follows the same pattern.The analysis isA.African tropical forests are less rich inbased on more than 1 million tree samples acrossbiodiversity.2,048 hectares of rainforest at 1,568 locations.TheyB.The climate of African tropical forests isfound that about 2.2%species made up 50%of theworse.trees across the biome(生物群系).C.African tropical forests have more rarespecies.D.African tropical forests cover a smaller area.翻译：研究人员说，这些发现表明，一种机制可能支配着世界各地的热带森林。C4.What does Prof Simon Lewis want to convey分析：这是二个主从复合句。主句为Researchersin the last paragraph?said。said之后为省略了关系词的宾语从句，作A.Rare tree species need to be planted moresaid的宾语。该宾语从句中又包含了一个that引导的than common ones.宾语从句，作indicate的宾语。B.It is more important to study common treespecies than rare ones.Researchers said the findings indicate that aC.Studying common tree species is moremechanism (may govern the tropical forestshelpful in understanding tropical forests.across the world.1They plan to focus future workon identifying the potential rule,given theD.It is urgent to get rid of rare tree species intropical forests.geographic differences of the forests they studied.1