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The last half of the 19th century ______ the steady improvement in the means of
The last half of the 19th century ______ the steady improvement in the means of
游客
2025-01-23
18
管理
问题
The last half of the 19th century ______ the steady improvement in the means of travel.
选项
A、witnessed
B、has witnessed
C、is witnessed
D、was witnessed
答案
A
解析
时态用法根据主语the last half of the nineteenth century可以判断时间为过去时,主语和谓语witness(亲眼目睹)之间是主动关系,因此A为答案。
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