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此病并发感染时最多见的是
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【C9】
Pollution caused by motor vehicles can kill more people a year than road accidents. The World Health Organization(WHO)has found that after studying【C1】______ countries— Austria, France and Switzerland. Long-term【C2】______ to exhaust fumes caused the premature death of 21 000 people【C3】______ respiratory and heart disease in the three countries,【C4】______ with nearly 10 000 deaths from accidents, WHO【C5】______ said last week. The report was prepared for【C6】______ to a conference of 70 environment and health ministers being organized by the United Nations agency in London. "The growing evidence【C7】______ air pollution is causing a major health burden adds to the effects of road traffic through noise, accidents and barriers【C8】______ cycling and walking, and we need to approach this head on," said Carlos Dora, a doctor with the WHOs European center for environment and health. "We are paying a huge【C9】______ for this excessive road transport; with our money and with our health. " One-third of pollution from fine particles which congest the lungs was【C10】______ by motor vehicles, rising to one-half in cities, the WHO found.
【C1】
在教育调查研究中，有效问卷的回收率一般不低于()
In order to cover his three sons expenses at college, Jack applied to a bank for a loan of
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