An international conference of computer science will be held in Tokyo next month. It will last for two weeks. More than ten world famous experts in this field will give lectures at the conference. Scientists and engineers from all over the world will attend the important meeting.  
                                                                                  
     In addition to the lectures, there will also be a lot of colorful social activities. These will include sightseeing tours both in and out of Tokyo, visits to cultural and scientific museums and universities. There will also be traditional Japanese performances such as calligraphy, flower arrangement, and tea ceremony. These scientists and engineers will not only learn a lot from the lectures, but also enjoy a good time in Tokyo.