下列哪项不属于肾后性少尿的病因（）
A.尿路结石
B.特发性腹膜后纤维化
C.严重肾下垂
D.肾血管狭窄
E.神经源性膀胱
参考答案：D
若双曲线x2+ky2=1的离心率是2，则实数k的值是______．
Mr. Voorhies planned to send the dresser and bed that ______ purchased in Bali to the Netherlands.
A. he B. hisC. him D. himself
