肾病综合征最根本的病理生理改变是（）
A.水肿
B.大量蛋白尿
C.电解质紊乱
D.低蛋白血症
E.高胆固醇血症
参考答案：B
After receiving the news , immediate _______ had been taken by the local government to stop the disease spreading .
A．speed
B．behavior
C．action
D．measure
用钢锯锯切金属时，起锯压力动作（）。
