题目内容
The last half of the nineteenth century the steady improvement in the mean of travel.A. has witnessed B. was witnessed
C. witnessed D. is witnessed
答案:C
解析:
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解析:
| witness是及物动词,意为“见证;目睹”,此题根据句子结构可知用主动语态,因the last half of the nineteenth century是表示过去的时间,故用一般过去时。
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