Where Did All the Ships Go?
The Bermuda Triangleis one___the greatest mysteries of the sea.In this triangular area between Florida，Puerto Rico and Bermuda in Atlantic，ships and airplanes___to disappear more often than in____parts of the ocean.And they do so___leaving any sign of an accident or any dead bodies.
It is___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 NavalAir Flight 19.___December 5，1945，five bomber planes carrying 14 men____ 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_____supernaturalforces. It is suggested the____ships and planes were either transposed to other times and places，kidnappedby aliens____attacked by sea creatures.
There are____natural explanations，though.The US Navy says that the Bermuda Triangle is one of two places on earth_____a magnetic compass points towards true north______magnetic north,____,planes and ships can lose their way if they dont make adjustments
The area also has changing weather and is known_____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 look C 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 In C From D Since
57 A took up B took on C took out D took off
58 A for B about C on D from
59 A missing B missed C miss D misses
60 A and B or C nor D neither
61 A also B no C barely D hardly
62 A which B there C where D that
63 A in stead of B except C but D out of
64 A Similarly B Furthermore C However D Therefore
65 A as B for C by D from
参考答案：
51 B 百幕大三角区是海洋中最大的谜团之一。0f表示所属关系，是合适的选择。
52 D 这里需要填入一个动词，这就排斥了A和c。look不跟动词不定式，因此只有seem是正确的。
53 c rest和others都不能放在名词前，another跟单数名词。因此只有other是正确的选择。
54 A 这个句子表达的是否定的意思，即这些船没有留下便失踪了，所以只能选择without这个介词。
55 c 表示据说用It is said。整个句子说的是：据说，Christopher Columbus 是记录这一海域怪现象的第一人。
56 A 表示具体的一天前面用On。又如：He was born on May 4，1980.他生于1980年5月4日。from和since表示从那一天起。
57 D 表示飞机起飞的动词组是take off。
58 c 动词blame可以跟for，也可以跟on搭配。试比较： They blame him for the Fire.They blame the fire on him.他们把火灾归罪于他。根据位置，此处应用on。
59 A 注意：miss和massing是两个不同的词。miss是想念，错过的意思。missing是失踪的意思。显然，此处应用missing。
60 B 前面的either一是很好的提示，告诉我们应用or。either or表示或是 或是。
61 A 倒数第二段讲的是其他的解释。因此用also。no是否定词。barely和hardly是具有否定意义的副词。
62 c 这里需要一个引导定语从句的词，由于先行词是t)laces，所以应用where。
63 A这里要表示的是而是的意思，所以应用._3stead of。
64 D 这里需要一个表示因果关系的词。在四个选项中只有therefore表示因果关系。
65 B to be known for是因而出名，to be known as是作为而著称。又如：He is known for his hum or他以幽默出名。He is known as a humorist.大家都知道他是幽默大师。