Analysis of test questions: Test questions examine citizens' political participation. It is wrong to increase citizens' political rights and freedoms. The political rights and freedoms of China citizens are clearly stipulated by the Constitution and laws, and cannot be increased or expanded at will; In the materials, Weibo played an active role in social management innovation and mass political participation, so ② ③ conformed to the meaning of the question; (4) Lack of material support, which is inconsistent with the facts.