Over 60 percent of the cyclists who entered last month’s race, but only about 40 percent of those who entered this month’s race, finished in under one hour. Since the courses used for the two races are exactly the same lenth, the course used for this month’s race must be more difficult than the one used last month. Which of the following most strengthens the argument? A.There were not cyclists who entered one of the races who did not also enter the other race. B.More cyclists entered this month’s race than entered last month’s race.
I go with A, which means that the cyclists for both races are the same group of people. It strengthens the arguments in that it rules out the possibility that it is the human factor that caused the different result.
B is to counter the argument by saying it is very likely that human factor, instead of the course, that caused the different result.
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发表于 2003-6-22 14:35:00
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