问题
选择题
The Great Wall, _____ to be the longest wall in the world, runs across China like a huge dragon．
A．saying
B．to say
C．said
D．being said
答案
答案：C
考查过去分词作定语。said 在这里相当于which is said,句意：在世界上被认为最长的长城横跨中国就像一条巨龙一样。故选C。