Not until a large piece of stone fell from the Sphinx's right shoulder ______.

A．did the Sphinx begin to be damaged

B．did the experts take steps to protect it

C．did the polluted air begin to damage it

D．did the Sphinx begin to draw people's attention

皮质醇增多症的临床表现包括（）

A.向心性肥胖

B.结膜水肿

C.青光眼

D.肾结石

E.肝硬化