狒狒逻辑宝典中一题

robertchu

Please make sure you follow this guideline of posting questions:

D 890 LSAT Question Link, 和统一提问格式 http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=39151&page=1

robertchu

The automakers’ premises for their current position, "these new restrictions would be overly expensive and unnecessary to efforts to curb air pollution," is not demonstrated in the passage to lead to a contradiction.

The premises of the automakers' past position was shown to be untrue because of the invention of catalytic converter.  But this does not apply to the premises of their current position.

echochen

明白了,原文强调the catalytic converter, invented in 1967, enabled automakers to meet the 1970 standards efficiently,并没有说该方法not expensive