完形填空阅读下面短文.从短文后各题所给的四个选项中.选出可以填入空白处的最佳选项.并在答题卡上将该项涂黑.New genetic analysis has revealed that many Amazon tree species are likely to survive human-made climate warming in the coming century, contr 题目和参考答案——青夏教育精英家教网—

完形填空

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

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, ________ in the latest edition of Ecology and Evolution, reveals the ________ age of some Amazonian tree species — more than 8 million years — and ________ shows that they have survived previous periods as warm as many of the global warming imagined periods ________ for the year 2100.

The authors write that, having survived warm periods in the past, the trees will ________ survive future warming, provided there are no other major environmental changes. ________ extreme droughts and forest fires will impact Amazonia as temperatures ________, the trees will stand the direct impact of higher temperatures. The authors ________ that as well as reducing greenhouse gas emissions to minimize the risk of drought and fire, conservation policy should remain ________ on preventing deforestation（采伐森林）for agriculture and mining.

The study disagrees with other recent researches which predicted tree species’ extinctions ________ relatively small increases in global average air temperatures.

Study co-author Dr Simon Lewis (UCL Geography) said the ________ were good news for Amazon tree species, but warned that drought and over-exploitation of the forest remained major ________ to the Amazon’s future.

Dr Lewis said: “The past cannot be compared directly with the future. While tree species seem likely to ________ higher air temperatures than today, the Amazon forest is being transformed for agriculture and ________, 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 ________. Similarly, today’s climate change is extremely fast, making comparisons with slower changes in the past ________.”

“With a clearer ________ of the relative risks to the Amazon forest, we ________ 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 ________ to reduce greenhouse gas emissions in order to make minimum the risk of drought and fire impacts and ________ the future of most Amazon tree species.”

1.A. advertisedB. describedC. publishedD. presented

2.A. frighteningB. surprisingC. excitingD. interesting

3.A. stillB. neverthelessC. howeverD. therefore

4.A. assessB. confirmC. forecastD. promise

5.A. particularlyB. probablyC. merelyD. possibly

6.A. SinceB. AlthoughC. WhenD. If

7.A. riseB. changeC. dropD. end

8.A. considerB. decideC. guaranteeD. recommend

9.A. basedB. builtC. focusedD. made

10.A. in relation toB. in response to

C. in reply toD. in reference to

11.A. findingsB. thoughtsC. inventionsD. writings

12.A. threatsB. disadvantages

C. embarrassmentsD. instructions

13.A. acceptB. tolerateC. permitD. require

14.A. farmingB. plantingC. cateringD. mining

15.A. powerB. influenceC. desireD. violence

16.A. difficultB. clearC. easyD. important

17.A. beliefB. direction

C. understandingD. suggestion

18.A. doubtB. concludeC. calculateD. prefer

19.A. thoughtB. guidanceC. protectionD. action

20.A. secureB. advanceC. sacrificeD. evaluate

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