【正确答案】正确答案： The Mogao Caves, located in Dunhuang City, Gansu Province of China, are one of the four noted caves in China and famous for exquisite wall paintings and statues. Originally constructed in the Pre-Qin Period and continuously expanded in different dynasties, the Caves are the world's largest and best-preserved treasure house of art. The Mogao Caves now consist of 735 caves with 45,000 square meters' wall paintings and more than 2,400 painted sculptures. Vivid in images and various in their themes, wall paintings of the Mogao Caves depict a variety of aspects including politics, economy, culture, art, religion and ethnic relations of ancient China, which are of great value for historical study. In 1987, the Mogao Caves were included in the World Heritage List.

【答案解析】解析：1．第一句话可用and把“是中国四大著名石窟之一”和“以……闻名于世”合并为一个句子，作为句子主干。“位于中国甘肃省敦煌市”则处理成过去分词短语located in…，作为插入语置于主语The Mogao Caves之后，这样显得句式灵活又简炼。 2．第二句话包含三个短句，可将“是世界上……艺术宝库”作为句子主干，把“始建于……，历经……不断扩建”处理成过去分词短语，置于句首，即译成originally constructed…and continuously expanded…。 3．“莫高窟现有洞窟……彩塑2400多个”这句话中，可将“现有洞窟735个”作为句子主干，把“壁画4．5万平方米，彩塑2400多个”翻译成with引导的介宾短语，紧跟在“洞窟”caves之后。这样比起把洞窟、壁画、彩塑翻译成并列宾语，句式显得新颖。 4．倒数第二句“莫高窟壁画形象逼真……历史研究价值”含有多个短句，主题均是莫高窟壁画。可考虑将“描绘的内容涉及……等各个方面”作为句子主干，译为wall paintings of the Mogao Caves depict…。“莫高窟壁画形象逼真、主题丰富”处理成状语的形式Vivid m images and various in themes，置于句首。而“具有很高的历史研究价值”则译成which引导的非限制性定语从句，跟在主句之后。这样显得句子主次分明，有所侧重。