The Great wall is knownthe world.A. forB. asC. onD. to

问题补充：

The Great wall is knownthe world.

A. for

B. as

C. on

D. to

答案：

A. for

B. as

C. on

(答案→)D. to

解析：句意，长城为世界所熟知。Be known to sb. 为某人所熟知，故选D。