Prep T1-20

由 **hwatai** » 2007-08-07 22:00

For years the beautiful Renaissance buildings in Palitito have been damaged by exhaust from the many tour buses that come to the city. There has been little parking space, so most buses have idled at the curb during each stop on their tour, and idling produces as much exhaust as driving. The city has now provided parking that accommodates a third of the tour buses, so damage to Palitito's buildings from the buses' exhaust will diminish significantly.

Which of the following, if true, most strongly supports the argument?

(A) The exhaust from Palitito's few automobiles is not a significant threat to Palitito's buildings.
(B) Palitito's Renaissance buildings are not threatened by pollution other than engine exhaust.
(C) Tour buses typically spend less than one-quarter of the time they are in Palitito transporting passengers from one site to another.
(D) More tourists come to Palitito by tour bus than by any other single means of transportation.
(E) Some of the tour buses that are unable to find parking drive around Palitito while their passengers are visiting a site.

答案是C；巴士在transport的時間只占了不到1/4，因此那3/4的時間(原本在idle at the curb during each stop)，現在都可以park了，因此大幅減少exhaust...

選項B比較混淆，看似support，事實上這是個無關選項，討論的核心已經被題目限定在bus之上，任何非bus的因素不在討論範疇之內。