根据短文回答 51～65 题。
Where Did All the Ships Go?
The Bermuda Triangle (三角区) is one ________(1) the greatest mysteries of the sea. In this triangular area between Florida, Puerto Rico and Bermuda in Atlantic, ships and airplanes ________(2) to disappear more often than in _______ (3)parts of the ocean. And they do so _______ (4) leaving any sign of an accident or any dead bodies.
It is _______ (5) 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 disappearance in the Bermuda Triangle was the US Naval (海军的) Air Flight 19. _______ (6) December 5, 1945, five bomber planes carrying 14 men _______ (7) 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 _______ (8) supernatural (超自然的) forces. It is suggested the ________(9) ships and planes were either transported to other times and places, kidnapped (绑架) by aliens'(外星人)_______(10) attacked by sea creatures.
There are _______ (11) natural explanations, though. The US Navy says that the Bermuda Triangle is one of two places on earth ________ (12) A magnetic compass (指南针) points towards true north _______(13) magnetic north.
______(14), planes and ships can lose their way if they don't make adjustments.
The area also has changing weather and is known _______ (15) its high waves. Storms can turn up suddenly and destroy A plane or ship. Fast currents could then sweep away any trace of an accident.
第 51 题 请选择（1）处的最佳答案。
A．from
B．of
C．about
D．on

A.
It
B.
The
C.
The
D.
Some
E.
There
F.
______(14),
G.
The
H.from
B．of
I.about
J.on