Test analysis: This question examines the peace-loving spirit in the Chinese national spirit. (1) don't bully the weak, don't humiliate the poor, is the embodiment of love for peace; ④ The word "harmony" embodies the love of peace; ② It is the embodiment of efforts; ③ It is the embodiment of continuous self-improvement. Exclude the options that don't meet the meaning of the question and choose D as the topic.

Comments: This question examines students' understanding of the connotation of the Chinese national spirit and which spirit of the Chinese national spirit is reflected in each option. Students are required to make accurate judgments on the basis of understanding the meaning of options, which requires students' ability and is difficult.