托福TPO18的一道阅读题!有疑问raph 3:Most lightning takes place within a cloud when the charge separation within the cloud collapses.However,as the storm cloud develops,the ground beneath the cloud becomes positively charged and lightning ca

托福TPO18的一道阅读题!有疑问raph 3:Most lightning takes place within a cloud when the charge separation within the cloud collapses.However,as the storm cloud develops,the ground beneath the cloud becomes positively charged and lightning ca
托福TPO18的一道阅读题!有疑问
raph 3:Most lightning takes place within a cloud when the charge separation within the cloud collapses.However,as the storm cloud develops,the ground beneath the cloud becomes positively charged and lightning can take place in the form of an electrical discharge between the negative charge of the cloud and the positively charged ground.Lightning that strikes the ground is the most likely to be destructive,so even though it represents only 20 percent of all lightning,it has received a lot of scientific attention.
7.The author remarks that “Lightning that strikes the ground is the most likely to be destructive” in order to explain why （1）
○ this form of lightning has been investigated so much
○ this form of lightning is not as common as lightning within a cloud
○ scientific understanding of this form of lightning is important
○ the buildup of positive charge on the ground beneath a storm cloud can have serious consequences
但答案是A,我选的是D,为什么不选D呢?修辞目的题不是往前面找答案吗?而且往前面找的话,D就是符合的吖!


托福TPO18的一道阅读题!有疑问raph 3:Most lightning takes place within a cloud when the charge separation within the cloud collapses.However,as the storm cloud develops,the ground beneath the cloud becomes positively charged and lightning ca
这是一道目的题.“Lightning that strikes..." 这句话之前的内容,也就是D的内容是为了得出这句话而做的描述,讲了这一毁灭性影响的形成过程,但并不是这句话的目的.你看原文中 “Lightning that strikes..." 后紧接着跟了个词 “so...",说明后面的内容才是题目中这句话的目的.故原文中的“ recieved a lot of scientific attention" 等同于A选项 “has been investigated so much".说白了就是因为闪电具有破坏性,所以它会引起科学界的广泛研究.前是因,后是果.所以,A是正确选项.D在内容上完全没有错,但不是题目中这句话的目的.以后做这种题时要把握好句子的作用,而不要一味的看内容.