Analysis of test questions: In the material of this question, "Resident Daimou spreads false information about H7N9 avian influenza through WeChat", which shows that Daimou has a weak legal awareness and a weak legal concept, so item 4 meets the meaning of the question and is optional; The material in the title "Resident Dai was administratively detained by the public security organs according to law for spreading false information about human infection with H7N9 avian influenza through WeChat" shows that violation of the law will be punished by law, and it also inspires us to exercise civil rights according to law, so ① ③ Two items meet the meaning of the topic and can be chosen; Abiding by the law is the central link of governing the country according to law, so item 4 is wrong and cannot be chosen. So, the answer is item B.