在尿液的浓缩和稀释中起作用的激素是（）
A、抗利尿激素
B、醛固酮
C、血管紧张素Ⅱ
D、肾素
参考答案：A
He is the only one of the students who _____ winner of scholarship for three years.[ ]
A. is
B. are
C. have been
D. has been
上海运用非开挖技术的发展情况？
