以下不适合用输尿管镜碎石的是()
A.输尿管狭窄
B.阴性结石
C.结石停留时间较长
D.患侧肾积水
E.肥胖患者
参考答案:A
I was reading the evening paper _____ the light went out.
[ ]
A. when
B. while
C. as
D. after
眼窝的形状是()
A.正方
B.园偏方
C.菱形
D.圆形