第1个回答 2009-11-27
To solve this proplem, the methods to be thought firstly were only two kinds.
第2个回答 2009-11-27
The approach to solving the problem can't be more than two.
第3个回答 2009-11-27
To solve this problem was first thought of the method is nothing less than two kinds of
第4个回答 2009-11-27
The solutions that people always thought of at time to solve the problem are:本回答被网友采纳