The last half of the nineteenth century_____ the steady improvement in the means
问题描述:
The last half of the nineteenth century_____ the steady improvement in the means
A.has witnessed B.was witnessed
C.witnessed D.is witnessed
答
C.
witness在此表示见证,可以用物做主语.一般不用被动语态.本句单纯叙述一个过去的事实,所以不选A.