We're are going to ____ ____ this Sunday.

有七根外直径是10厘米的塑料管，用一根绳子捆起来，如果需要用绳子全长的$\frac{1}{11}$来打结，那么要用多长的绳子才可以捆起来？（保留π）

____

古代雅典民主制实行抽签选举、轮番而治，这一做法（    ）

①有利于全体雅典人参与国家管理②提供了公民参与政治的均等机会

③确保了公民大会决策的公正无私④忽视了参与政治者的能力与品德

根据短文内容，判断句子正误。

    Bangkok is the capital(首都)of Thailand. It is very different from Shenzhen. There are many temples in Bangkok. It is hot all year round, so there are a lot of fruits. The most famous f fruit is durian(榴莲). There are many rivers here, so the market on the water is very famous. You can buy flowers, vegetables, fruits and other things on the boats.

  The best time to visit Thailand is at the end of March or the beginning of April, because it is the most famous festival in Thailand--Water Festival. It is the beginning of their New Year. Before the festival, people clean their house and cook nice food. During the festival, people sing, dance and throw water on each other. They think that water can clean away bad things and bring good luck.

  How in interesting it is!