Taxiing down the  tarmac , the  jetliner  abruptly stopped, turned around and returned to the gate.  After an hour long wait, it finally  took off.

　　A 　concerned 　passenger asked the flight attendant, "What was the problem?"

　　"The pilot was bothered by a noise he heard in the engine," he explained.  "It took us awhile to find a new pilot."

Key  words：

tarmac　（n.）柏油路

Taxi down　（v.）滑行

jetliner　（n.）噴射客機

gate　（n.）登機口

took off　起飛

concerned　（adj.）掛念的