BF GWD

yayajiaojef

Q25:
Scientists typically do their most creative work before the age of forty.It is commonly thought that this happens because aging by itself brings about a loss of creative capacity.However, a study has found that almost all scientists who produce highly creative work beyond the age of forty entered their fields late and less than a dozen years before their creative breakthroughs.Since creative breakthroughs by scientists under forty also generally occur within a dozen years of the scientist’s entry into the field, the study’s finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not due to age but rather because most have spent too long in their fields.

In the argument given, the two portions in boldface play which of the following roles?

• The first is the position that the argument as a whole defends; the second is evidence that is advanced as part of that defense.
• The first and second are both claims that have been advanced in support of a position that the argument as a whole opposes.
• The first is an explanation that the argument challenges; the second provides evidence in support of a competing explanation that the argument defends.
• The first is an explanation that the argument challenges; the second is evidence that has been used against an alternative explanation that the argument defends.
• The first is an explanation that the argument defends; the second is evidence that has been used to challenge that explanation.
  为什么是C？我选了E！
  challenge有什么不一样么？

Vickyliu

The first is a statement which the author argues AGAINST, not defends.

LZ, you had the whole argument completely upside down.

Nickyl90

我做BF的时候喜欢画个草图，这样就能清楚逻辑关系了
L1表示第一行 以此类推
Scientists typically do their most creative work before the age of forty.It is commonly thought that this happens because aging by itself brings about a loss of creative capacity.However, a study has found that almost all scientists who produce highly creative work beyond the age of forty entered their fields late and less than a dozen years before their creative breakthroughs.Since creative breakthroughs by scientists under forty also generally occur within a dozen years of the scientist’s entry into the field, the study’s finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not due to age but rather because most have spent too long in their fields.
L1现象
L2 一种解释
however(转折)
L3 一个发现（因为有however，L3反对L2）
since（信号词，=because，起解释支持作用）
L4 支持L5（L5中的suggest提出另一种解释）

这个argument最后的结论在L5上
可见L4 支持L5
L5反对L2

结合选项答案一目了然

Nickyl90

当然，你不用写的这么细，
做题的时候在草稿纸上写简单点，我是用符号的
支持用箭头，反对用箭头加个反字，总之自己找个习惯的记录方法
除非你头脑特清楚
BF还是得记下点什么，免得读糊涂了，反复读还是糊涂

yayajiaojef

非常感谢！方法很重要！

Nickyl90

非常感谢！方法很重要！
yayajiaojef 发表于 2011-5-22 07:46

    我开始做OG的BF基本没做对过
后来按着这种思路去分析做GWD就顺手很多
加油哈~~~