He has read lots of books,_____that he is still young.

A．considering

B．considered

C．being considered

D．to sonsider

患者肾综合征出血热，多尿期，近日表现为乏力、腹胀、心悸，经诊察，确诊为低钾血症，其主要原因是（）

A.过量输注葡萄糖

B.多尿

C.进食不足

D.肾上腺坏死

E.甲亢