高等教育 / 新发展英语综合教程（二）
The Lost Sea is unique because it is _ _ _ _ _ _ _ _ .
A.part of a historical cave system
B.the biggest underground lake in the world
C.listed in the Guinness Book of World Records
D.the largest body of water in Tennessee
A.part of a historical cave system
B.the biggest underground lake in the world
C.listed in the Guinness Book of World Records
D.the largest body of water in Tennessee
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