Zhang Jianxing has been walking through the ancient forests of the Shennongjia National Nature Reserve for over two decades to find the wild man. He will not give up until he ____ (come) face-to-face with the creature. He began living in the mountain in 1994, after becoming ____(fascinate) by the wild man. Armed with a camera, he ____ (constant) looks for clues of the creature's whereabouts, living off the land and ____ (sleep) in abandoned homes and empty caves. To him, the wild man is a branch of science,____ that he has been studying for a very long time. So far, he has collected enough evidence of the wild man's ____(exist) —more than 100 hair samples and 3,000 photos of large footprints (脚印). He even came close to seeing it for himself no less than nineteen____ (time). However, most scientists regard it as nothing more than a legend ____ there is a lack of concrete evidence. But Zhang Jianxing ____(convince) that he will one day find the wild man himself and prove the scientists wrong. To him it's just ____ matter of time.

阅读下面材料：
唐朝时，书生张三出生于人杰地灵的江都(今扬州)(隋朝第二代皇帝多次乘龙舟来这里游玩，最后在这里被杀)。张三苦读诗书十载，一日他从家乡出发，经运河到京城应试。在离船登岸之地A(运河的中心)遇雨，全身衣服湿透。张三又经长途跋涉，终于来到京城长安，他看到全城街道整齐，树木成行，身着各式服装的边疆各族和各国侨民，云集在这里。张三凭一手漂亮的“颜体”和一篇优美的文章考取功名。之后，被分到长安工作。在这里张三朗读了唐诗《忆昔》-“忆昔开元全盛日，小邑犹藏万家室。稻米流脂粟米白，公私仓廪俱丰实。”赢得了热烈的掌声。
请回答：
（1）张三离船登岸之地A是哪一个城市?该运河开通时皇帝是谁?
（2）张三参加的科举考试,是当时最重要的科举科目,你知道是什么科目吗?
（3）张三所朗读的《忆昔》是一位有名的诗人所写，该作者的诗因为深刻地反映了那个复杂动荡的时代，而被后世称为什么?他本人也被尊称为什么？
（4）《忆昔》反映的是哪位皇帝统治时期的繁荣景象?