68. A 细节理解题。根据文章第一段中"Not all historical buildings are attractive."可知有些历史建筑不吸引人。
69. C 是非判断题。根据文章第三段中"It is true that there are examples of new buildings which have spoilt the area they are in, but the same can be said of some old buildings too. "可知有些古老建筑也破坏了它们所在的地方。
70. C 词义推测题。根据文章第四段中"...I would argue against copying previous architectural styles and choose some-thing fresh and different..."可推测"move things forward"意为"选择新的建筑风格"。
71. D 目的意图题。根据文章姜最后一段最后一句可知作者赞成在古老的历史建筑旁边建造现代化建筑。