高血压伴有低血钾最可能的病因是（）
A.原发性高血压服用利尿剂治疗
B.原发性醛固酮增多症
C.嗜铬细胞瘤
D.肾动脉狭窄
E.库欣综合征
参考答案：B
. Both of my parents insisted _______ a computer for me, but I don’t think it is necessary.
A．to buy
B．buying
C．on buying
D．in buying
在横线里填上适当的小数．
9厘米=______分米2元4角=______元．
