四级练习2014.12.06
[audio]http://sound.yywz123.com/tingbbs/cet4/cet420141206.mp3[/audio]The Bermuda Triangle is a triangular area in the Atlantic Ocean.Stories go that many people, ships and planes have mysteriously disappeared in this area.(1)______________________________________________.But some people believe that there is no mystery to be solved.The number of wrecks in this area is not extraordinary, given its size,location and the amount of traffic it receives.Many of the ships and planes that have been identified as having disappeared mysteriously in the Bermuda Triangle were not in the Bermuda Triangle at all.Investigations to date have not produced scientific evidence of any unusual phenomena involved in the disappearances.Thus, no explanation is needed.(2)_______________________________________________.The modern story of the Bermuda began soon after five Navy planes disappeared on a training mission during a severe storm in 1945.The most logical explanation as to why they disappeared is that lead pilot Taylor's compass failed.The trainees' plane were not equipped with working navigational instruments.The group was lost and simply ran out of fuel.No mysterious forces were likely to have been involved other than the “mysterious” force of gravity on planes with no fuel.It is true that one of the rescue planes blew up shortly after take-off,(3)_______________________________________________.
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