GRE逻辑10套第4套12题12.The organizers of tomorrow's outdoor concertannounced that it will go on tomorrow on scheduleunless bad weather is forecast or too few advancetickets are sold.If the concert is canceled,refundswill be made to ticket holde

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GRE逻辑10套第4套12题12.The organizers of tomorrow's outdoor concertannounced that it will go on tomorrow on scheduleunless bad weather is forecast or too few advancetickets are sold.If the concert is canceled,refundswill be made to ticket holde

GRE逻辑10套第4套12题12.The organizers of tomorrow's outdoor concertannounced that it will go on tomorrow on scheduleunless bad weather is forecast or too few advancetickets are sold.If the concert is canceled,refundswill be made to ticket holde
GRE逻辑10套第4套12题
12.The organizers of tomorrow's outdoor concert
announced that it will go on tomorrow on schedule
unless bad weather is forecast or too few advance
tickets are sold.If the concert is canceled,refunds
will be made to ticket holders.Since some ticket
holders have already been issued refunds even though
more than enough advance tickets were sold,it must
be the case that bad weather is forecast.
Which of the following is an error of reasoning con-
tained in the argument?
(A) It proceeds as if a condition,which by itself is
enough to guarantee a certain result,is the only
condition under which that result would occur.
(B) It bases a conclusion that is known to require
two conditions on evidence that bears on only
one of those conditions.
(C) It explains one event as being caused by another
event,even though both events must actually
have been caused by some third,unidentified
event.
(D) It treats evidence for the absence of one condi-
tion under which a circumstance would occur
as conclusive evidence that that circumstance
will not occur.
(E) Evidence given to support the conclusion actually
undermines it
A.文章可以看懂,但选项完全把我说晕了.

GRE逻辑10套第4套12题12.The organizers of tomorrow's outdoor concertannounced that it will go on tomorrow on scheduleunless bad weather is forecast or too few advancetickets are sold.If the concert is canceled,refundswill be made to ticket holde
A是把充分条件(enough to guarantee)当成唯一条件,我第一次做选E.哈哈哈,感觉原文逻辑没问题.
但是,If the concert is canceled,refunds will be made to ticket holders.而不是if and only is the concert is canceled
这题老误导人了,你看A就会以为他在说unless bad weather is forecast or too few advance
tickets are sold.

a.表条件
b.表示结果
c.表示因果
d. 表示证据证明
e. 表示支持结论的证据
文章说的是如果天气不好就退票，肯定是a 啊

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