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Each year, hundreds of thousands of people die from heart attack, a leading cause of death. In the Landmark Physicians’ Health S
Each year, hundreds of thousands of people die from heart attack, a leading cause of death. In the Landmark Physicians’ Health S
admin
2009-05-24
49
问题
Each year, hundreds of thousands of people die from heart attack, a leading cause of death. In the Landmark Physicians’ Health Study at Harvard University in the United States in the late 1980s, a research team led by Dr. Heinekens studied 22 701 healthy male physicians, half of whom were randomly【B1】to take all aspirin every other day while the others took placebos(安慰剂). After the participants had been【B2】for an average of five years, the doctors in the aspirin group were found to have suffered 34 percent fewer first heart attacks.【B3】,a recent international study indicates that aspirin can be beneficial for those people with a history of coronary artery(冠状动脉) bypass surgery,【B4】of their sex, age or whether they have high blood pressure or diabetes.
According to a report by the American Heart Association, Doctors should consider prescribing【B5】aspirin for middle-aged people with a family history of, or【B6】for, heart disease.(Risk factors include smoking, being more than 20 percent overweight, high blood pressure and lack of exercise.)
Aspirin is also a lifesaver during heart attacks. Paramedics now give it routinely, and experts urge anyone with chest pain,【B7】if it spreads to the neck, shoulder or an arm, or is accompanied by sweating, nausea(恶心), light headedness and breathing difficulty to chew and【B8】an aspirin tablet immediately.
When taking aspirin for heart attack,【B9】the plain, uncoated variety. For even faster absorption, crush and mix with a little water. Speed of absorption is critical because most heart attack deaths occur【B10】the first few hours after chest pain strikes.
选项
A、expected
B、demanded
C、assigned
D、advised
答案
C
解析
根据上下文,assign(分配,指派)的词义最为合适。本句意思是"20世纪80年代后期,由Hennekens 博士领导的一个研究小组以22701个健康的男性医生为研究对象,随即分配其中的一半人每隔一天服用一片阿司匹林,另一半人则服用安慰剂"。expect表示"期望,期待";demand表示"要求",有命令式语气;而advise表示"劝告"。本句叙述研究方法,其他三项选词都不符语意,故答案选项正确。
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