--- Why do you hope to visit Chengbi Lake some day?
--- _________ it is a beautiful lake in Baise city.
A. Because B. For C. Though D. As soon as
【答案】A
【解析】句意：——为什么你希望有一天参观澄碧湖？——因为它是百色市的一个美丽的湖。Because因为，表示直接原因,可用于回答 why 提出的问题、引导表语从句、用于强调句等；for因为，表示因果关系,通常要放在主句之后,且可与 because 换用；Though尽管，引导让步状语从句；As soon as一……就……；根据Why do you hope to visit Chengbi Lake some day?可知此处用because回答，故选A。