求助一道新GRE逻辑10套里面的题~~

VoticaUID: 3192538

逻辑10套·练习2·第7题
Editorial：Critics of nuclear power complain about the allegedly serious harm that might result from continued operation of existing nuclear power plants. But such concerns do not justify closing these plants；after all, their operation has caused no more harm than that caused by pollution generated by coal-and oil-burning power plants, the most important other sources of energy. Which of the following is an assumption on which the argument depends？
(A) Existing nuclear power plants should be closed only if it can be conclusively demonstrated that their
continued operation is likely to cause harm more serious than the harm their operation has already
caused.
(B) Closing existing nuclear power plants would require greatly increased reliance on coal-and oil-burning
power plants.
(C) The harm that has resulted from operation of existing coal-and oil-burning power plants has
been significant.
(D) The harm that a nuclear power plant is likely to cause as it continues to operate can be reliably
predicted from the past history of nuclear power plants.
(E) The only harm that has resulted from operation of existing coal-and oil-burning power plants has
resulted from the pollution generated by these plants.

正确答案是D。我不太懂D有什么相关的，我想选B，我觉得题目是说“批评者说N有害，应该关闭N。作者反驳说N也不比C更加有害，所以要求关闭C是没道理的。”我觉得B说“关闭N=新建C”应该是前提假设……
哪位大大能帮忙讲解一下啊？

lizaozaoUID: 3137052

But such concerns do not justify closing these plants；after all, their operation has caused no more harm than that caused by pollution generated by coal-and oil-burning power plants, the most important other sources of energy.
作者在argue的时候，说了critics的观点不成立，因为迄今为止核电带来的危害不比传统发电多。
在这里，他的assumption是“将来也不会超过”。

zcycloneUID: 3184589

楼上大虾解释的很犀利，我一开始这道题也不明白，后来慢慢做得多了就明白思路了。
楼主，如果问的是Which of the following supports the argument above，B完全可以的，但是如果是assumption，只能是D

VoticaUID: 3192538

2# lizaozao

(⊙o⊙)哦！！高人也——

VoticaUID: 3192538

3# zcyclone
嗯，看来我做题还不够多，谢谢大家帮忙啦~~

Arsenal1203UID: 3205244

也在纠结这道题，谢谢各位

iamoperaUID: 3512970

学习了，多谢ls