_____he has limited technical knowledge, the old worker has a lo

_____he has limited technical knowledge, the old worker has a lot of experience.


A、Although
B、Unless
C、As
D、Since
【正确答案】：A
【题目解析】：本题考查让步状语从句。句意：虽然这位老工人在技术方面的知识有限，但是他有丰富的经验。although引导让步状语从句，意为“虽然，尽管”。