题目内容：
根据下面材料，回答题。Passive Smoking Is Workplace Killer
Pressure mounted on Britain on Monday to take action on ____51 ____smoking with new research showing second-hand smoke ____52____ about one worker each week in the hospitality industry (服务Professor Knorad Jamrozik, of Imperial (帝国的) College in London, told a conference on environmental tobacco that second-hand ____53____ kills 49 employees in pubs, bars, restaurants and hotels each year and contributes to 700 deaths from lung cancer, heart____ 54____ and stroke across the total national work force.
"Exposure in the hospitality ____55____ at work outweighs (超过) the consequences of exposure of living ____56____ a smoker for those staff," Jamrozik said in an interview.
Other____ 57____ have measured the levels of exposure to passive smoking but Jamrozik calculated how it would translate into avoidable deaths.
His findings are ____58____ on the number of people working in the hospitality industry in Britain, their exposure to second-hand smoke and their ____59 ____of dying from it.
Jamrozik said the findings would apply to ____60____ countries in Europe because, to a greater or ____61____ extent, levels of smoking in the community are similar.
Professor Carol Black, president of the Royal College of Physicians, which sponsored the meeting, said the research is proof of the need for a ban on smoking in ____62____ places.
"Environmental tobacco smoke in pubs, bars, restaurants and other public places is ____63____ damaging to the health of employees as well as the general public." she said in a statement.
"Making these places smoke-free not only protects vulnerable (易受伤害的) staff and the public, it will ____64____ help over 300,000 people in Britain to stop smoking completely," she added.
Ireland recently became the first country to introduce a national ban on smoking in public ____65____. New York and pads of Australia have taken similar measures.
____________ A．passive
B．natural
C．positive
D．whole
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