圈一圈，数一数。

读短文，判断正误。

Disneyland

   Would you like to see the whole world on one trip(旅行)? Welcome to the wonderful world of Disneyland. In Disneyland, you can see many different countries(国家) in one day. You can see people and buildings（建筑物） from every country. You can eat many different kinds of food in one day. There are restaurants from Australia, England, America, Japan and China.

  There is much to do in Disneyland. You can do a lot of shopping and buy many funny and beautiful gifts. You can see a mouse taller than you! His name is Mickey Mouse.

对以下实验装置所研究物理问题的描述中，正确的是（　　）

阅读如图漫画《两驴吃草》后得到的启示是（　　）

①竞争只会导致两败俱伤               ②团结协作才能更好地克服生活中的困难

③合作就能达成彼此期待的目标   ④良好的合作才能创造双赢

极坐标系中，以（9， $\frac{\pi }{3}$ ）为圆心，9为半径的圆的极坐标方程为(   )