Being tall gives Yao Ming a(n) _______ over other basketball players. 

Due to the widespread ________ of this medical technology, more diseases can be discovered and treated at an early stage.

The writer was always looking for suitable _____ to use in his next story.

---- Water can dissolve almost anything and give nutrients to creatures. ---- Yes, and that’s one of its __________.

Soon after the mud-rock flow hit Zhouqu, Gansu Province, many soldiers came to the ______ as many people were trapped underground.