福尔摩斯与红发会

This book contains two stories. The first one tells us that we should use reasonablity to distinguish what is right and what is wrong. Every crime will leave out the clues,and Holmes is so clever and cautious to find out the truth.I think the second one is closed to our study life. Success must be achieved by effort. No pains, no gains. It's unreasonable to use wrong ways of copying the papers.