Filling roofs with plants and dirt can help pull a modest amount of heat-trapping carbon dioxide (二氧化碳) out of the atmosphere, found by a new study.While green roofs certainly won't solve the global warming problem, their ability to absorb greenhouse gases—even just a little bit—supports the case for planting them on city buildings, despite extra costs on the front end, said lead researcher Kristin Getter, of Michigan State University in East Lansing."The key to fighting global warming is capturing carbon from the atmosphere and storing it in new reservoirs that weren't storing carbon before," Getter said. "In the whole scheme of things, green roofs are not the one answer to sequestering carbon, but they will certainly help."Green roofs offer a long list of known benefits. They lower air-conditioning costs in the summer by absorbing and reflecting heat. They lower heating costs in the winter by adding extra isolation.Green roofs appeal to cities because they soak up rainwater, making excess storm-water less likely to flood sewage (下水道) systems and increase sewage treatment costs. Plant-filled roofs make urban areas less likely to become heat islands. They reduce air pollution and noise pollution. And plants, even when it's several stories up, provides living places for animals.What does the word "sequester" mean in the sentence "In the whole scheme of things, green roofs are not the one answer to sequestering carbon...?" (Para. 3)A. Decompose.B. Recirculate.C. Remove.D. Decay.
Filling roofs with plants and dirt can help pull a modest amount of heat-trapping carbon dioxide (二氧化碳) out of the atmosphere, found by a new study.
While green roofs certainly won't solve the global warming problem, their ability to absorb greenhouse gases—even just a little bit—supports the case for planting them on city buildings, despite extra costs on the front end, said lead researcher Kristin Getter, of Michigan State University in East Lansing.
"The key to fighting global warming is capturing carbon from the atmosphere and storing it in new reservoirs that weren't storing carbon before," Getter said. "In the whole scheme of things, green roofs are not the one answer to sequestering carbon, but they will certainly help."
Green roofs offer a long list of known benefits. They lower air-conditioning costs in the summer by absorbing and reflecting heat. They lower heating costs in the winter by adding extra isolation.
Green roofs appeal to cities because they soak up rainwater, making excess storm-water less likely to flood sewage (下水道) systems and increase sewage treatment costs. Plant-filled roofs make urban areas less likely to become heat islands. They reduce air pollution and noise pollution. And plants, even when it's several stories up, provides living places for animals.
What does the word "sequester" mean in the sentence "In the whole scheme of things, green roofs are not the one answer to sequestering carbon...?" (Para. 3)
A. Decompose.
B. Recirculate.
C. Remove.
D. Decay.
题目解答
答案
解析
本题考查根据上下文猜测单词含义的能力。解题的关键在于结合文章中对绿色屋顶作用的描述以及相关语句来推断“sequester”的意思。
- 首先，文章提到“The key to fighting global warming is capturing carbon from the atmosphere and storing it in new reservoirs that weren't storing carbon before”，说明对抗全球变暖的关键是从大气中捕获碳并将其储存在之前不储存碳的新地方。
- 接着，“In the whole scheme of things, green roofs are not the one answer to sequestering carbon, but they will certainly help”这句话表明绿色屋顶虽然不是解决“sequestering carbon”的唯一方法，但肯定有帮助。由此可以推断，“sequestering carbon”与前面提到的“capturing carbon from the atmosphere and storing it”意思相近。
- 然后分析各个选项：
- A选项“Decompose”意为分解，与从大气中捕获并储存碳的意思不符。
- B选项“Recirculate”意为再循环，也不符合语境。
- C选项“Remove”有移除的意思，从大气中捕获碳可以理解为将碳从大气中移除，与文意相符。
- D选项“Decay”意为腐烂，同样不符合文章表达的意思。