15.A researcher studying drug addicts found that,on average,they tend to manipulate other people a great deal more than nonaddicts do.The researcher concluded that people who frequently manipulate other people are likely to become addicts. which of the following,if ture,most seriously weakens the researcher's conclusion? (A)After becoming addicted to drugs,drug addicts learn to manipulate other people as a way of obtaining drugs. (C)Some nonaddicts manipulate other people more than some addicts do. 答案是A,大家能帮我解释一下为什么是A吗,OG上的REASONING感觉写的不太明白,还不大理解为什么选A. 还有C选项为什么不对呢?大家分析一下啊.... .谢谢!
[此贴子已经被作者于2008-8-21 16:53:35编辑过] |