人民公园内要建一个圆形金鱼池，直径为20米，深2米．

（1）要在金鱼池的底面和侧面贴瓷砖，贴瓷砖的面积是多少？

（2）为了安全，在池口外0.5米处加装一圈围栏，围栏长多少米？

（3）池内水面比池口低60厘米，水的体积是多少立方米？

找出划线部分错误的一项，并且在题后横线上改正。

( )1. Could you tell me some informations about the tour to Taiyuan.              ________

              A                                          B         C                D

( )2. I'd like to buy two air tickets for Nanjing.                                               ________ 

             A         B                  C       D

( )3. What present are you going to buy to me, mum?                                    ________ 

             A                    B                          C   D

( )4. Everything there were very beautiful, we enjoyed it very much.               ________   

                              A        B              C                 D

( )5. The math problem was very difficult that few students could work it out.  ________

                                                A                        B                 C        D