题目

New genetic analysis has revealed that many Amazon tree species are likely to survive human-made climate warming in the coming century, contrary to previous findings that temperature increases would cause them to die out. A study,   41  in the latest edition of Ecology and Evolution, reveals the   42  age of some Amazonian tree species -- more than 8 million years -- and   43  shows that they have survived previous periods as warm as many of the global warming imagined periods   44   for the year 2100.     The authors write that, having survived warm periods in the past, the trees will   45   survive future warming, provided there are no other major environmental changes.   46   extreme droughts and forest fires will impact Amazonia as temperatures   47  , the trees will stand the direct impact of higher temperatures. The authors   48  that as well as reducing greenhouse gas emissions to minimize the risk of drought and fire, conservation policy should remain   49  on preventing deforestation（采伐森林）for agriculture and mining.     The study disagrees with other recent researches which predicted tree species’ extinctions   50 relatively small increases in global average air temperatures.     Study co-author Dr Simon Lewis (UCL Geography) said the   51  were good news for Amazon tree species, but warned that drought and over-exploitation of the forest remained major  52  to the Amazon’s future.     Dr Lewis said: “The past cannot be compared directly with the future. While tree species seem likely to   53   higher air temperatures than today, the Amazon forest is being transformed for agriculture and  54  , 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 today’s Amazon as they did in previous warm periods, when there was no human   55  . Similarly, today’s climate change is extremely fast, making comparisons with slower changes in the past   56  .”     “With a clearer   57  of the relative risks to the Amazon forest, we   58  that direct human impacts -- such as forest clearances for agriculture or mining -- should remain a key point of conservation policy. We also need more aggressive   59  to reduce greenhouse gas emissions in order to make minimum the risk of drought and fire impacts and   60   the future of most Amazon tree species.” 41. A. advertised              B. described               C. published               D. presented 42. A. frightening             B. surprising               C. exciting                   D. interesting 43. A. still                  B. nevertheless           C. however                 D. therefore 44. A. assess                   B. confirm                   C. forecast                  D. promise 45. A. particularly             B. probably                 C. merely                           D. possibly 46. A. Since                     B. Although                 C. When                     D. If 47. A. rise                 B. change                  C. drop                       D. end 48. A. consider          B. decide                           C. guarantee                     D. recommend 49. A. based                    B. built                        C. focused                  D. made 50. A. in relation to    B. in response to        C. in reply to               D. in reference to 51. A. findings           B. thoughts                 C. inventions               D. writings 52. A. threats                   B. disadvantages        C. embarrassments           D. instructions 53. A. accept                    B. tolerate                   C. permit                            D. require 54. A. farming           B. planting                  C. catering                  D. mining 55. A. power                     B. influence                 C. desire                            D. violence 56. A. difficult            B. clear                             C. easy                       D. important 57. A. belief               B. direction                 C. understanding        D. suggestion 58. A. doubt                     B. conclude                 C. calculate                 D. prefer 59. A. thought           B. guidance                C. protection               D. action 60. A. secure                   B. advance                 C. sacrifice                  D. evaluate 答案：41-45 CBDCB                    46-50 BADCB 51-55 AABDB     56-60 ACBDA

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