It is called a sea, but the landlocked Caspian is actually the largest lake on Earth, which covers more than four times the surface area of its closest rival in size, North America's Lake Superior.
(A)It is called a sea, but the landlocked Caspian is actually the largest lake on Earth, which covers
(B)Although it is called a sea, actually the landlocked Caspian is the largest lake on Earth, which covers
(C)Though called a sea, the landlocked Caspian is actually the largest lake on Earth, covering
(D)Though called a sea but it actually is the largest lake on Earth, the landlocked Caspian covers
(E)Despite being called a sea, the largest lake on Earth is actually the landlocked Caspian, covering
题目分析：Ait is called的逻辑主语就是caspian，没有变化的情况下加it就多余了，干掉。B也犯了相同错误，干掉。C把it去掉了，正好留着。D那个but很诡异，并且重心放到cover上了，明明应该是这个湖是世界上最大的湖，后面的内容是来具体说明这个情况的，如果重点放在cover上就无法表达这个意思了，干掉。E那个being显得很多余，干掉。
