Question

【题目】_______ he was young, _______ he could work out many difficult math problems.

A. Although; but B. Although;/ C. While;so D. Because;so

Answer 1

【答案】B

【解析】解析：句意：虽然他很年轻，但他能解出许多高难度的数学题。Although意为“虽然、尽管”引导让步状语从句，和but不能同时出现在一个句子中，所以A选项排除；C、D两个选项意思翻译过来使句子不通。故答案选B。