CD《Gmat 句子改错：语法推理精讲》

ClarkXiao

有人做过这本书么？做到考点6“相关不等于因果”各种崩溃啊，每当我再看一遍以为能弄懂了的时候下一道例题又在明明白白告诉我还没懂。谁能给我解释下？我能分清楚那个选项是因果关系，那个选项是相关关系，但是总是在结合前后语义判断属于那种关系上出错。比方说这道题：
A good methord for farmers to cultivate salmons is to have them put into the water in which the temperature ranges from 41 to 59 Fahrenheit(that means warm water) before they die when cold weather comes
A.to have them put into the water in which the temperature ranges from 41 to 59 Fahrenheit(that means warm water)before they die when cold weather comes.
B.to have them put into the water in which the temperature ranges from 41 to 59 Fahrenheit(that means warm water)before cold weahter comes and kills the animal

ClarkXiao

明白了，有些不习惯这种思维方式。总是默认补充一些额外东西去判断

毕出-Helr

ClarkXiao 发表于 2016-11-6 22:48
还有这道可能更明显点
Since some  gas spheres release energy in form of light,an international team o ...

我就回答这个“更明显”的吧。
我们判断相关和因果的基础是语境。换句话说，就是判断语境是否告诉了我们划线部分中两个事件的关系。比如这道题目，语境告诉我们的是，“某些气团会以光的形式来释放能量”。在这个语境中，它完全没有提到“天文学家”和“这13个气团被发现”这两件事的关系啊。如果语境中说，是天文学家诱使气团释放光的话，那可以选A。

ClarkXiao

还有这道可能更明显点
Since some  gas spheres release energy in form of light,an international team of astronomers has detected at least 13 huge gas spheres.
A.an international team of astronomers has detected at least 13 huge gas spheres
B.at least 13 huge gas spheres have been detected due to an international team of astronomers.

这里面为什么气体以光的形式散发能量不能说明后面是因果关系？因为气体发光了所以天文学家才能看见气团啊？