The last half of the nineteenth century --the steady improve

学习时间:2026-08-23 09:58:36 阅读：5040

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

腼腆的长颈鹿

2026-08-23 09:58:36

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C。witnessedwitness 目睹原句意为：二十世纪下半叶目睹了人类旅行方式的稳步进步。这里witness用作主动也是中英文差异之一,需熟记。类似的有see。