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1、第一编专题三文体3(二)(2018黑龙江哈尔滨六中三模)New genetic analysis has revealed that many Amazon tree species are likely to survive humanmade climate warming in the coming century, contrary to previous findings that temperature increases would cause them to die out.A study, _1.C_ in the latest edition of Ecology and
2、Evolution, reveals the _2.B_ age of some Amazonian tree speciesmore than 8 million yearsand _3.D_ shows that they have survived previous periods as warm as many of the global warming imagined periods _4.C_for the year 2100.The authors write that, having survived warm periods in the past, the trees w
3、ill _5.B_ survive future warming, provided there are no other major environmental changes._6.B_ extreme droughts and forest fires will impact Amazonia as temperatures _7.A_, the trees will stand the direct impact of higher temperatures.The authors _8.D_ that as well as reducing greenhouse gas emissi
4、ons to minimize the risk of drought and fire, conservation policy should remain _9.C_ on preventing deforestation(采伐森林) for agriculture and mining.The study disagrees with other recent researches which predicted tree species extinctions _10.B_ relatively small increases in global average air tempera
5、tures.Study coauthor Dr Simon Lewis (UCL Geography) said the _11.A_ were good news for Amazon tree species, but warned that drought and overexploitation of the forest remained major _12.A_ to the Amazons future.Dr Lewis said, “The past cannot be compared directly with the future.While tree species s
6、eem likely to _13.B_ higher air temperatures than today, the Amazon forest is being transformed for agriculture and _14.D_, and what remains is being degraded(使恶化) by logging (伐木) ,and increasingly split up by fields and roads.”“Species will not move as freely in todays Amazon as they did in previou
7、s warm periods, when there was no human _15.B_.Similarly, todays climate change is extremely fast,making comparisons with slower changes in the past _16.A_.”“With a clearer _17.C_ of the relative risks to the Amazon forest,we _18.B_ that direct human impactssuch as forest clearances for agriculture
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