休克病人经抢救后，血压正常，但尿管引流仅100ml。为确定是否有急性肾功能衰竭少尿期，下述检查哪个是正确的（）

A.尿钠降低

B.尿中尿素值升高

C.血细胞比容（红细胞压积）、血浆蛋白下降

D.尿肌酐与血肌酐的比值，30：1

E.血钾升高

It is said that the headmistress ________ three months ago will soon ________.[ ]

A. hired; fired  

B. dismissed; be fired

C. hired; be fired  

D. hiring; be dismissed