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
【C3】
选项
答案M
解析 从句子结构来看，空格位于which引导的非限制性定语从句中，在定语从句中作includes的宾语，因此空格处应填入名词。结合句意，“室内污染，包括家庭供暖和烹饪等______，在过去几十年里一直保持______”。由此可推断，家庭供暖和烹饪是导致室内污染的原因。备选项中只有sources(来源，原因)符合句意，故答案为M。
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大学英语四级

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