...the old Silk Road. The caves were then built by monks and...
答案(1)A. 段落大意题.根据第一段最后一句"But all these only existed because of one man's vision.但所有这些都只是因为一个人的幻觉."以及第二段第一句" In 366 A.D.,a monk named Le Zun looked across the river at dawn and saw a thousand Buddhas appear on the golden...