With no rain for three months and food supplies      _out, the situation here is getting from bad to worse.     [ ]

A. run                          

B. running

C. to run                        

D. to be run

哪个部位是褥疮的好发部位（）。

A.肩背部

B.坐骨结节部

C.骶部

D.大转子部

E.足跟部