底价
参考答案：保留价俗称底价指拍卖人与委托人商定的某件拍品成交的最低价格。
We all _______ how he made such great progress in a short time. [ ]
A. believed
B. thought
C. decided
D. wondered
用于表观生物利用度的参数有( )。
A．K和V
B．Cmax
C．tmax
D．C0
E．AUC
