从2013年开始，某市在社区推动基层党组织和自治组织代表、社区居民代表、相关社会组织代表等组成民情理事会。民情理事会通过协商讨论，促进诸如广场舞扰民、小区乱停车等难题的解决，得益于民情理事会（    ）

①提供管理有效的利益协商渠道

②完善了基层民主自治的组织形式

③发挥了多方主体参与社区治理的作用

④明确了社区居民参加基层民主协商的义务

阅读理解

     There are some very good things about open education. This way of teaching allows students to develop their own interests in many subjects. It has open classrooms, open environment, open courses, open attitudes (态度), and open resources(资源).It helps students get a happy school life.

    Open education allows students to be responsible for their own education. Some students do badly in a traditional classroom. The open classroom may allow them to enjoy learning. Some students will be happier in an open education school. They will not worry about grades or rules.

    But many students will not do well in an open classroom. For some students, there are too few rules. These students will do little in school. They will not make good use of open education.

    Because open education is so different from traditional education, these students may have a problem getting used to making so many choices.

    For many students, it is significant to have some rules in the classroom. They worry about the rules even when there are no rules. Even a few rules will help this kind of students. The last point about open education is that some traditional teachers do not like it. Many teachers do not believe in open education. Teachers who want to have an open classroom may have many problems at their schools.

    A new word is becoming more and more popular on the Internet in China - but no one knows quite what it means. The word "duang" is so new that you can't even find it in the Chinese dictionary. But it has already spread(传播) like fire on the Chinese Internet, appearing more than 8,000,000 times on Weibo, where 15,000 users had more than 312,000 discussions. On Baidu, it has been looked up almost 600,000 times. But what does it mean?

    "Everyone's duang-ing and I still don't know what it means! Looks like I'd better go back to school now," said Weibo user Fahmida.

    Another user asked: "Have you duang-ed today? My mind is full of duang duang duang."

    "To duang or not to duang, that is the question," wrote user Beatrice.

    "Duang" seems to be imitating (模仿) a sound. It all seems to have started with Hong Kong action star Jackie Chan, who in 2004 appeared in a shampoo ad (洗发水广告) where he used the sound "duang" to describe his soft and black hair. The word came to people again recently(最近) after Chan posted it on his Weibo page. Thousands of users then began to visit Chan's Weibo page with comments (评论).

    The word seems to have many different meanings, and there's no perfect (完美的) Chinese meaning for it, but you could use it to give emphasis (强调) to the word that follows it. A kid might be "duang cute", for example.