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The last half of the nineteenth century ______ the steady improvement in the means of travel.
The last half of the nineteenth century ______ the steady improvement in the means of travel.
admin
2011-01-17
78
问题
The last half of the nineteenth century ______ the steady improvement in the means of travel.
选项
A、has witnessed
B、was witnessed
C、witnessed
D、is witnessed
答案
C
解析
根据主语可判断出时间为过去时。
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本试题收录于:
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