单选题
1.[2009.10]The profit-sharing plan is designed to ______ the staff to work hard.
A.calculate
B.demonstrate
C.speculate
D.motivate
正确答案:D
答案解析:本题考查词语辨析。[译文]利润共享计划目的是激发员工努力工作。A计算、估算;B证实、论证、演示;C思索、推测;D激励、激发。