你完全可以确定！Betcha!
Murphy, Stuart J./ Schindler, S. D. (ILT)
HarperCollins
出版时间：
1997-8
出版社：
HarperCollins
作者：
Murphy, Stuart J./ Schindler, S. D. (ILT)
内容概要
What do cars, toys, people, and jelly beans have in common? They can all be estimated. Two friends try out their estimating skills and find out that estimating can have real rewards––especially when there’s a contest to enter!
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