— Why did you leave that position?    

— I___a better position at IBM.    [ ]

A. offer                          

B. offered    

C. am offered                  

D. was offered

高血压伴肾功能不全、高血钾时，选用哪类药物应慎重（）

A.ACEI

B.α受体阻滞药

C.β受体阻滞药

D.利尿药

E.钙拮抗药