Can you produce a logicalproof that what's happened in the past will happen in the future?
关于过去发生的事情会在未来发生，你能提供逻辑上的证明么？
2
The paper agrees that only logicalproof can be criterion of modern mathematical truth, and also discusses that logicalproof is an action of practice.
本文同意逻辑证明是检验现代数学真理的唯一标准，同时也讨论了逻辑证明是一种实践活动的问题。
3
Only few students can give a right logicalproof. (5) The boys'understanding of proof is better than the girls', the girls focus on the form of proof, while the boys focus on logic in proof.