The last half of the nineteenth century ______ the steady improvement in the means of trav
公共英语
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The last half of the nineteenth century ______ the steady improvement in the means of travel.
A.has witnessed
B.was witnessed
C.witnessed
D.is witnessed
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正确答案:C
解析:本题考查时态。句中空格后有宾语,所以勿需用被动语态,另根据主语the last half of the nineteenth century“19世纪后半叶”,所以选择过去时。故选项C正确。
