__he is limited technical knowledge the old worker was a lot of enperience.选哪一个A.SinceB.UnlessC.AsD.Although
问题描述：
__he is limited technical knowledge the old worker was a lot of enperience.
选哪一个
A.Since
B.Unless
C.As
D.Although
答
d
答
选D.Although
尽管那个老工人缺乏技术知识，但他拥有很多经验
答
D
答
while