Air pollution killed about seven million people last year, making it the world"s single biggest environmental health risk, the World Health Organisation (WHO) says. The【C1】______a doubling of previous estimates, means one in eight of all global deaths were linked to polluted air. This means air pollution has【C2】______poor diet, high blood pressure and tobacco smoke as the leading【C3】______of preventable death worldwide. It also shows how【C4】______pollution inside and outside of people"s homes could save millions of lives in future. Air pollution deaths are most【C5】______from heart disease, strokes or lung disease. It is also linked to deaths from lung cancer and【C6】______breathing infections. "The evidence【C7】______the need for concerted action to clean up the air we all breathe," said Maria Neira, an official from WHO. "The risks from air pollution are now far greater than previously thought or understood, particularly for heart disease and strokes." Poor and middle-income countries in Southeast Asia and the Western Pacific region had the largest number of air pollution-related deaths, with 3.3 million deaths linked to indoor air pollution and 2.6 million deaths to outdoor air pollution. Indoor pollution is mostly caused by cooking【C8】______coal, wood stoves. The WHO estimates that around 2.9 billion people worldwide live in homes using wood or coal as their【C9】______cooking fuel. Outdoors, air is mainly polluted by transport, power generation, industrial and agricultural emissions and residential【C10】______and cooking. Research suggests outdoor air pollution【C11】______levels have risen significantly in some parts of the world, particularly in【C12】______countries with large populations【C13】______rapid industrialization. Carlos Dora, a WHO public health expert, called on governments and health【C14】______to act on the evidence and【C15】______policies to reduce air pollution, which【C16】______would improve health and reduce humans"【C17】______on climate change. "Excessive air pollution is often a by-product of unsustainable policies in【C18】______such as transport, energy, waste management and industry, " he said. "In most cases, healthier【C19】______will also be more economical in the long term due to healthcare cost savings as well as climate【C20】______."
单选题
【C1】
【正确答案】
B
【答案解析】解析：空格后的a doubling of．．．和后半句的one in eight…polluted air讲的是空气污染造成的死亡数目，B项toll“(死亡、事故或灾难的)总数”符合语义。
单选题
【C2】
【正确答案】
A
【答案解析】解析：首句提到空气污染成为世界上最大的单个环境健康风险(the world"s single biggestenvironmental health risk)，说明它已超过了其他健康风险。A项overtaken意为“赶上，超过”，符合语义逻辑。
【答案解析】解析：从and判断，空格处所填单词与health搭配后应是和governments(政府)一样致力于减少空气污染(reduce air pollution)的机构。health agency指“卫生机构”，包括医疗机构、疾病预防控制中心、卫生监督及监测机构等，故选C项。
单选题
【C15】
【正确答案】
B
【答案解析】解析：本句提到卡洛斯·多拉呼吁各国政府减少空气污染(to reduce air pollution)，其中一个举措是要act on the evidence(按照证据采取行动)，因此推测空格处单词与policy搭配后应 能实现减少空气污染的目的。B项devise意为“制定”，制定政策能够实现这个目的。