Ancient Chinese political and metallurgical wisdom is an important part of China's traditional culture and still has profound significance today. The moral of the following question limbs is related t

Test Question Analysis: The purpose of China's Communist Party is to serve the people with all its heart and soul, and the purpose of our government is to serve the people. The expression "the people are the most important thing, the gods of earth and grain come second, and the ruler is the least important thing" in item ③ coincides with the purpose of the Party and the government to serve the people, and conforms to the meaning of the question, so it can be selected; ① ② the expressions in the two items reflect the spirit of self-improvement of the Chinese nation, and do not conform to the spirit of the Chinese people. The expression of ① and ② reflects the spirit of self-improvement of the Chinese nation, which is not in line with the meaning of the question, so it can't be selected. Therefore, the answer is C.