考场机经 test73
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In a five-year study of people with coronary heart disease, 85 percent of those given Artilase, a new drug developed as a treatment for coronary heart disease, were still alive at the end of the study. Since without Artilase only 75 percent of this group would have been expected to have lived the entire five years, Artilase is clearly effective in extending the lives of people with coronary heart disease.
Which of the following, if true, most seriously undermines the argument given?
A
Eighty-five percent of those in the study who were given a placebo (a medically ineffective but harmless pill) rather than Artilase were still alive at the end of the study.
B
The study was funded by the manufacturers of Artilase.
C
The study did not include people whose coronary heart disease was so far advanced at the time the study began that they were not expected to live more than one year.
D
At least 75 percent of the people in the study would have been expected to live an additional five years or more had they undergone surgical treatment for their heart disease.
E
The study had originally been intended to last only four years.
Select one answer choice.
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1.未作答
正确答案
1.A
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