题目解析:
C 这句话看上去很复杂,其实是一个加了很多修饰成分的类比符合句,用 so 来连接类比(A 是 XXX 样的,B 也是 XXX 样的)。去掉不非主要成分,原句和缩略为:Like the stone of Roman wall, which were held by design and cement, so the roman realm were bonded into an entiy by controls. 这样缩略完以后就非常好选了,正确答案就是 C。A 中的 inspire 纯属瞎编乱造;B 中的让步也是原句没有的,错;D 前半句非常正确,但从句说 powerful laws 缩小了原文的 control,不对。