阅读理解。
On November 11，2005，Beijing unveiled(公布)the 2008 Olympic mascots．They are five cute dolls：Beibei，Jingjing，Huanhuan，Yingying and Nini．You can see them in the picture! In China，people would like to call them Fu Wa．
Try to put the five names together．Oh，you get it．Beijing Huan Ying Ni．They say“Welcome to Beijing．”Many people love these five lovely mascots．IOC(国际奥委会)president(主席)Rogge sent a letter to BOCOG(北京奥组委)．He said he loved these Olympic mascots very much．
根据短文内容，回答下列问题。
（1）What does the word“mascots”mean?
                                            
（2）How many mascots are there in 2008 Olympics?
                                            
（3）What would people call these dolls in China?
                                            
（4）Who is the IOC president?