第6部分：完形填空 (第51～65题，每题i分，共15分)
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案，涂在答题卡相应的位置上。
Where Did All the Ships Go?
The Bermuda Triangle(三角区)is one___(51)the greatest mysteries of the sea.In this triangular area between Florida，Puerto Rico and Bermuda in Atlantic，ships and airplanes ___(52)to disappear more often than in____(53)parts of the ocean.And they do so___(54)leaving any sign of an accident or any dead bodies.
It is___(55)that Christopher Columbus was the first person to record strange happenings in the area.His compass stopped working，a flame came down from the sky，and a wave 100 to 200-feet-high carried his ship about a mile away.
The most famous disappearanceinthe Bermuda Triangle was the US Naval(海军的)Air Flight 19.___(56)December 5，1945，five bomber planes carrying 14 men____(57) on a training mission from the Florida coast.Later that day,all communications with Flight 19 were lost They just disappeared without a trace.The next morning，242 planes and 19 ships took part in the largest air-sea search in history. But they found nothing. Some people blame the disappearances_____(58)supernatural(超自然的)forces. It is suggested the____(59)ships and planes were either transposed to other times and places，kidnapped(绑架)by aliens(外星人)____(60)attacked by sea creatures.
There are____(61)natural explanations，though.The US Navy says that the Bermuda Triangle is one of two places on earth_____(62)a magnetic compass(指南针) points towards true north______(63)magnetic north,____(64),planes and ships can lose their way if they dont make adjustments
The area also has changing weather and is known_____(65)its high waves.Storms can tum up suddenly and destroy a plane or ship.Fast currents could then sweep away any trace of an accident.
51 A from B of C about D on
52 A often B lookC sometimes D seem
53 A rest B another C other D others
54 A without B by C from D upon
55 A saying B say C said D says
56 A On B InC From D Since
57 A took up B took onC took out D took off
58 A for B aboutC on D from
59 A missingB missed C missD misses
60 A and B orC nor D neither
61 A also B no C barely D hardly
62 A whichB there C where D that
63 A in stead ofB except C but D out of
64 A Similarly B FurthermoreC However D Therefore
65 A as B for C by D from