题目内容：
根据下列短文，回答题。Captain Cook Arrow legendIt was a great legend while it lasted, but DNA testing has 51 ended a two-century-old story of the Hawaiian arrow carved from the bone of British exploere Captain James Cook 52 died in the Sandwich Islands in 1779.
“There is 53 Cook in the Australian Museum,” museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of Cook's bone. But that will not stop the museum from continuing to display the arrow in its 54 , “Uncovered: Treasures of the Australian Museum,” which 55 include a feather cape presented to Cook by Hawaiian King Kalani'opu'u in 1778.
Cook was one of Britain's great explorers and is credited with 56 the “Great South land,” 57 Australia, in 1770. He was clubbed to death in the Sandwich Islands, now Hawaii.
The legend of Cook's arrow began in 1824 58 Hawaiian King Kamehameha on his deathbed gave the arrow to William Adams, a london surgeon and relative of Cook's wife, saying it was made of Cook's bone after the fatal 59 with islanders.
In the l890s the arro was given to the Australian Museum and the legend continued 60 it came face-to-face with science.
DNA testing by laboratories in Australia and New Zealand revealed the arrow was not made of Cook's bone but was more 6l made of animal bone, said Philp.
However, Cook's fans 62 to give up hope that one Cook legend will prove true and that part of his remains will still be uncovered, as they say there is evidence not all of Cook's body was 63 at sea in 1779. “On this occasion technology has won,” said Cliff Thornton, president of the Captan Cook Society, in a 64 from Britain. “But I am 65 that one of these days...one of the Cook legends will prove to be true and it will happen one day.” 。回答第51空。 A．A finally
B．B firstly
C．C lately
D．D usually
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