输尿管下段结石行开放手术的适应证是()
A.体外震波碎石治疗失败
B.结石直径超过1cm
C.输尿管镜手术失败
D.结石嵌顿过久,肾脏重度积水
E.保守排石治疗失败
参考答案:C
“一杯牛奶可以强壮一个民族”.经常喝牛奶的同学体质好,身体生长发育快,其主要原因是牛奶中含有较多的( )
A.维生素、糖类
B.糖类、脂肪
C.维生素、钙
D.蛋白质、钙
In the following two hours he was _____ the performance, because it turned out to be as wonderful as he had expected.[ ]
A. tired of
B. absorbed in
C. annoyed with
D. disappointed with