Einstein said: "The most beautiful thing in the world is to have a few friends who are upright and solemn in their minds and hearts." The following correct understanding of this sentence is () A. Friendship is a normal psychological need, but it is not necessary in life. B. Everyone needs friends, but not many, at most a few. Making friends with good moral character and knowledge will benefit people. D. Friendship is a beautiful thing, and the more friends you make, the better.

C

Analysis of test questions: This question aims to examine students' understanding of making friends. According to the textbook knowledge, friends will bring us warmth, support and strength. But we should be happy to make friends, not bad friends, and be careful to make friends. In the inscription, "How many friends are upright, which is the solemnity of heart and heart" means "friends". True friends benefit us for life. ABD's views are all incorrect, and the correct answer is C.