敲锣打鼓问问题

cathycathyhan

这是一道assumption的题目，也是我目前为止感觉超难的一道题目，问问大家的答案和思路！
A large number of drivers routinely violate highway speed limit. Since driving at speeds that exceed posted limits is a significant factor in most accidents, installing devices in all cars that prevent those cars from traveling faster than the speed limit would prevent most accidents.
Which one of the following is an assumption on which the argument depends?
A. a person needs not be trained mechanic to install the device properly.
B. most accidents are caused by inexperienced drivers.
C. a driver seldom needs to exceed the speed limit to avoid an accident when none of the other drivers involved are violating the speed limit
D. most drivers who exceed the speed limit do so unintentionally.
E. even if the fines for speed-limit voilations were increased, the number of such violations would still not be reduced.

cathycathyhan

顺便再问一下，大家做题目的时候，看到很奇怪的选项，比如句子拗口或者句子绕来绕去，大家如何面对的？是把这些心理没底的选项放在一边等一下看，还是有时候就忘记了！我发现很多时候看不懂的答案就是正确答案。不知道大家有没有这样的感觉。

cathycathyhan

http://forum.chasedream.com/archiver/GMAT_CR/thread-470302-1.html
感觉这个人总结的有点道理！什么取非削弱的，我看了别的帖子感觉还是绕来绕去，这个帖子总结的不错！有时候你根本判断不出有没有漏洞或者还是排除他因的！不知道大家是如何思路！大家踊跃发言呢！！！

fjatpku

觉得是c吧
取非削弱还是挺明显的

cathycathyhan

你习惯取非削弱吗？我看到还有人说，assumption一般就是结论的must be true题目，取非削弱对于削弱题更管用，不知道这种说法对不对？

sdcar2010

Necessary assumption. Use negation. If after negating an answer choice, the argument cannot hold, that answer choice is the right answer. Negation = logic opposite, not polar opposite.

cathycathyhan

Thank you all guys! I've got it! The answer is the reverse effect of the assumption in that argument! But I am still confused in assumption question. So yesterday I reread Bible logical reasoning again. Hope it can help me also!