2. 外语
  3. A. appeals B. chopping C. effective D. gradually E. hard F. incredible G. inevitable H. interest I. ma

A. appeals B. chopping C. effective D. gradually E. hard F. incredible G. inevitable H. interest I. ma

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问题    A. appeals      B. chopping    C. effective    D. gradually    E. hard
   F. incredible     G. inevitable   H. interest    I. matters    J. perplexing
   K. reforestation    L. release    M. sharply    N. sinks     O. trimming
   "Forests are the lungs of our land," said Franklin Delano Roosevelt. Twenty years ago, the world’s lungs were diseased. Roughly half of all the planet’s once-luxuriant tropical forests had been felled and the further deterioration of the Earth’s green spaces seemed 【C1】______.
   Over time countries trace a "forest transition curve". They start in poverty with the land covered in trees. As they get richer, they fell the forest and the curve drops 【C2】______ until it reaches a low point when people decide to protect whatever they have left. Then the curve rises as  【C3】______ begins. At almost every point along the line, countries are now doing better: deforesters are 【C4】______ down less; reforesters are replanting more.
   This 【C5】______ to everyone because of the extraordinary contribution that tropical forests make to reducing carbon emissions. Trees are carbon 【C6】______. If you fell and burn them, you  【C7】______ carbon into the atmosphere. If you let them grow, they store carbon away in their trunks for centuries. Despite decades of destruction, tropical forests are still absorbing about a fifth of emissions from fossil fuels each year.
   Encouraging countries to plant trees (or discouraging them from logging)is by far the most  【C8】______ way of reducing greenhouse-gas emissions. If Brazil had kept on felling trees as rapidly as it was cutting them down last year, it would, by 2023, have put an extra 3.2 billion tonnes of carbon dioxide into the atmosphere. As a way of helping the environment, protecting trees is  【C9】______ to beat. It is in everyone’s 【C10】______ to find out which forest policies work—and back them.
【C7】
选项
答案L
解析 空格前是主语you，空格后为名词carbon，可知空格处需填入及物动词。此句与下句的句式相同，语义形成对比，两句的关键词fell and burn和let them grow是两种相反的行为，导致的结果也应相反。与store carbon away“存贮二氧化碳”相反的应是“释放二氧化碳”，词库中动词release“释放”符合此意，故选L。
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专业英语四级

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