FEIFEI一题求助！！！

wynyy2000

120. In Europe, schoolchildren devote time during each school day to calisthenics. North American schools rarely offer a daily calisthenics program. Tests prove that North America children are weaker, slower, and shorter-winded than European children. We must conclude that North American children can be made physically fit only if they participate in school calisthenics on a daily basis.

Which one of the following is assumed in the passage?

A.    All children can be made physically fit by daily calisthenics.
B.    All children can be made equally physically fit by daily calisthenics.
C.    Superior physical fitness produces superior health.
D.    School calisthenics are an in indispensable factor in European children’s
E.    North American children can learn to eat a more nutritious diet as well as to exercise daily.
我选的是A，理由：即算calisthenics使得欧洲儿童反应，智力等各方面更优秀，但无法证明C就一定使用于美国儿童？on the other,欧洲儿童的反应快是不是由于做操导致（它因可能削弱），答案是D（D是不完整，feifei没有补充完整）
希望大家convince me that  D is a better choice

steve_chem

觉得错在了all   题干中的推理过程既不需要all children的信息  也无法推出all
D 选项应该不完整，后面少了一点东西

wynyy2000

嗯，A的确有把范围扩大的嫌疑，题中只将欧洲与美国儿童比较