高考英语 阅读理解专项攻略十二 生态环保类课件.ppt

“人与自然和谐发展”是时代的主题,生态环保的话题也越来越多地出现在新试题中。在命题方面有以下趋势: :强调人与自然和谐发展。 :关注人、自然的生态现状和未来发展。 :形式多样,突出整体理解,合理推断。 A_ possible _ solution _ to_ global _ warming _ may _be_ further _ away _ than _ ever, ording to a new report published in the journal measuring how much of the greenhouse gas carbon dioxide is locked away in the deep ocean by plankton when it dies found that it was significantly less than previous estimates. Plankton is a natural sponge( 海绵) for carbon occurs naturally in the ocean and its growth is stimulated by iron which it uses to photosynthesise( 光合作用) and plankton dies it sinks to the bottom of the ocean locking away some of the carbon it has absorbed from the plankton by the artificial addition of iron has long been proposed as a potential way to geo - engineer the removal of carbon dioxide from the atmosphere. Researchers analysed an area of the Southern ocean known to be naturally rich in iron and their report reveals that the amount of carbon sequestered( 隐藏) to the deep ocean for a given input of natural iron falls far short of previous geo - engineering has serious implications for proposals to influence climate change through iron fertilisation of the sea. Yet some researchers believe that the theory should not be discounted and that more research is Gary Fones is a marine biogeochemist at the University of Portsmouth's School of Earth and Environmental was part of the team which carried out the study around the Crozet islands in the Southern said: “ We know that carbon is transported to the deep ocean and seabed( 海底) via the plankton , but the question is how much and for how long ?” bined results of all the studies undertaken so far indicate that there could be other factors influencing the amount of carbon exported. 1. Which statement of the following is the