Question

【题目】_____ Edison had failed many times，he didn't give up and succeed in the end.

A. Unless B. Although C. Because

Answer 1

【答案】B

【解析】句意：虽然爱迪生失败了很多次，但他没有放弃，最后成功了。A. Unless除非，如果…不，引导条件状语从句；B. Although虽然；尽管；但是，引导让步状语从句；C. Because因为，引导原因状语从句。根据句意分析这两句语意有转折的意思，它们关系是让步关系。结合句意和语境可知选B。