关于老年人肾脏改变的说法错误的是
A.肾单位减少
B.肾动脉硬化
C.肾功能储备减少
D.肾小球滤过率正常
E.易受药物毒性损伤
参考答案:D
I usually have an egg and two of milk for breakfast.[ ]
A. bottle
B. a bottle
C. bottles
D. the bottles
现值(Present value)