栽一批树，成活率为98%，表示______占______的98%．
成活率为98%，表示成活的棵数占栽的总棵数的98%．
故答案为：成活的棵数，栽的总棵数．
（）是构成日用陶瓷形式美的先决条件。
23. There were reports that three companies were ______ to market drug.
A．advocating
B．previewing
C．negotiating
D．Reserving
