请教feifei-23，谢谢！

23. On a certain day, nine
scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation
is due to mechanical problems with the airplane scheduled for a certain flight.
However, since it is unlikely that Swift would have the mechanical problems
with more than one or two scheduled flights on a single day, some of the nine
cancellations were probably due to something else. a

(A) More than one or two airplanes
were scheduled for the nine canceled flights.

(B) Swift Airlines has fewer
mechanical problems than do other airlines of the same size.

(C) Each of the canceled flights
would have been longer than the average flight on Swift Airlines.

(D) Swift Airlines had never before
canceled more than one or two scheduled flights on a single day.

(E) All of the airplanes scheduled
for the canceled flights are based at the same airport.

为什么选A?