$\frac{1}{6}+\frac{2}{9}+\frac{5}{6}+\frac{7}{9}$ =____

    Jiaozi is the Chinese name of dumplings. We have all kinds of dumplings with meat or vegetables in it. Jiaozi is very delicious and it is very popular (受人喜爱的) in China, especially (尤其) during Spring Festival. People usually eat jiaozi on the eve of Spring Festival. Why do people like eating jiaozi? Because Spring Festival is Chinese New Year. People eat round jiaozi to show their wishes for good luck. The history of jiaozi is about 2, 000 years. Eating jiaozi is a very happy thing. When all the families make jiaozi together, you'll feel very happy.

党的十八大报告首次提出建设“美丽中国”，“美丽中国”首重生态文明的自然之美。春秋战国时期的孟子也曾提出类似主张，即（    ）

One for you and one for me.