It seemed as if the world was .A. at an endB. in the endC. at the end ofD. by the end of

It seemed as if the world was .
A. at an end
B. in the end
C. at the end of
D. by the end of

(答案→)A. at an endB. in the endC. at the end ofD. by the end of解析：短语辨析。A结束；B最后，终于；C在…结束的时候；D到…时为止；句意：似乎这个世界结束了。故A正确。

就是这个解释