2. 外语
  3. Millions die early from air pollution each year. Air pollution costs the global economy more than $5 trillion annually in welfar

Millions die early from air pollution each year. Air pollution costs the global economy more than $5 trillion annually in welfar

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问题    Millions die early from air pollution each year. Air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious【C1】______occurring in the developing world.
   The figures include a number of costs【C2】______with air pollution. Lost income alone amounts to $225 billion a year.
   The report includes both indoor and outdoor air pollution. Indoor pollution, which includes【C3】______like home heating and cooking, has remained【C4】______over the past several decades despite advances in the area. Levels of outdoor pollution have grown rapidly along with rapid growth in industry and transportation.
   Director of Institute for Health Metrics and Evaluation Chris Murray【C5】______it as an " urgent call to action". "One of the risk factors for premature deaths is the air we breathe, over which individuals have little【C6】______," he said.
   The effects of air pollution are worst in the developing world, where in some places lost-labor income【C7】______nearly 1% of GDP. Around 9 in 10 people in low- and middle-income countries live in places where they【C8】______experience dangerous levels of outdoor air pollution.
   But the problem is not limited【C9】______to the developing world. Thousands die prematurely in the U. S. as a result of related illnesses. In many European countries, where diesel (柴油)【C10】______have become more common in recent years, that number reaches tens of thousands.
A) ability I) exclusively
B) associated J) innovated
C) consciously K) regularly
D) constant L) relates
E) control M) sources
F) damage N) undermine
G) described O) vehicles
H) equals
【C4】
选项
答案D
解析 空格前是系动词remained，空格后是时间状语，因此空格处应填入形容词作表语。结合上下文，“室内污染，包括家庭供暖和烹饪等来源，在过去几十年里一直保持______，尽管该领域取得了进步”。由此可推断，尽管人们在供暖和烹饪方面取得了技术上的进步，但是室内污染程度还和之前一样。备选项中只有constant(不变的，恒定的)符合句意，故答案为D。
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大学英语四级

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