大全－ｔｅｓｔＩ－１３

A sociologist recently studied two sets of teenagers. The members of one set spent 10 or more hours per week watching violent television programs, and the members of the other set spent 2 hours or less per week watching violent television programs. A significantly greater proportion of the teenagers in the former group exhibited aggressive behavior during the period of the study. The sociologists reasoned that the prolonged exposure to television violence caused the aggressive behavior.

Which of the following, if true, of the teenagers in the study, provides the strongest challenge to the sociologist’s conclusion?

(A) Some teenagers who watched more than 10 hours of violent television programming per week behaved less aggressively than others in the same group of teenagers.

(B) Some teenagers who watched 2 hours of violent television programming per week did not behave aggressively.

(C) Some teenagers voluntarily stopped watching violent television programs after being victims of violence.

(D) Some teenagers watched violent television programs alone, while others did so in groups.

(E) Many of the teenagers in the first group exhibited aggressive behavior before the study began.

答案E，我的问题是，如果A去掉some，可否备选？

看了十小时的人比看两个小时的人更暴力，所以看暴力电视越多使人更暴力。如果这时候发现看20小时的人反而比较温和了，可否削弱这个conclusion呢？

谢谢

不可以. A中是some和other 的对比, 去掉后句子本身都有问题了. 而且题目中提到A significantly greater proportion of the teenagers in the former group, 所以这是两个group 之间proportion的比较,即

第一组有100人, 其中80人有暴力倾向, 第二组有100人, 只有20人有暴力倾向.楼主的提法是在第一组中又有10人看20小时以上电视的反而比较温和,无法推翻这一结论.