大全-3-19

我笨，我努力

m-3-19.   Identical twins tend to have similar personalities; if environment outweighs heredity in personality development, twins raised together should presumably have more similar personalities than those raised apart. A recent study of identical twins in both situations measured 11 key traits through a questionnaire, and concluded that 7 of the 11 are primarily products of heredity.

Which of the following, if established, would cast the most doubt on the study’s results?

(A) Fewer than half of the pairs of twins studied were raised separately.

(B) The ages of all of the twins studied fell within a 10-year range.

(C) Some of the traits that the study attributed to heredity developed in the separately raised twins because those pairs all grew up in similar families.

(D) Although over half the traits measured were determined to be linked to heredity, the nature of those traits varied widely.（C）

(E) The 11 traits that were measured constitute a representative sample of larger, generally accepted pool of key personality traits.

这题不是很理解，请大家帮忙解释一下，谢谢！

arundhati

题目探讨环境和基因对于双胞胎的相似度影响那个大。a recent study对两种情况下的twins进行研究（一种是一快长大，一种是在不同环境下长大）。得出11种特性中的7种是基于基因的因素（言下之意说在两种twins的研究数据种，11种有7种是相似的，意思是不论分开养，还是在一起养，7种特性是不因环境而改变的）

题目问weaken，那么用它因，或断桥削弱。C说分开养的twins其实是在环境相似的家庭中长大，那么断开了家庭不同就等于环境不同的假设，所以属断桥削弱。

我笨，我努力

我当时选的A，我觉得A也是可以削弱命题的。在A上我还是不是很明白，

我是不是应该这样理解：

关键在于identical twins in both situations。就是每对双胞胎的把他们分开和放在一起养都研究一下？

如果不是这样，A也是可以削弱的。

请指教！

arundhati

你的理解是正确的，是把双胞胎分开和放在一起分别研究。可是即使不是，A也不能很好削弱啊，原文是让你削弱研究结果，而A是直接质疑研究方法，这属于抬杠啊~