There is a saying in The Analects: "He is honest and acts without orders; His body is not right, although he does not obey. " There is a saying in China that "it is necessary to be hard to strike while the iron is hot, and it is necessary to embroider." C

Analysis of test questions: In the question, "He is honest and acts without orders; Explain that the ruling party must set an example by example, inspire us to insist that the party should govern the party, effectively solve its own outstanding problems, and effectively improve its style of work, so it conforms to the meaning of the topic and can be selected; The title "strike while the iron is hot and embroider skillfully" emphasizes the need to improve one's own quality and strengthen one's own construction, so it conforms to the meaning of the title and can be selected; Ruling by law is the basic way of the party's ruling, so ① it is wrong and cannot be chosen; 4 has nothing to do with the meaning of the question and cannot be selected; So, the answer is C.