题目

  Celebrations and traditions hold a special place in a country. It is a time when the families come together and celebrate a holiday，for a particular purpose. Besides (he national festivals and celebrations，many places enjoy some whacky celebrations. Henley-on-Todd Regatta If you want something quieter, trip over to Alice Springs in the dry heart of Australia. There you will find the Todd Regatta in a riverbed that normally has no water. the boats are bottomless and without paddle(浆）.The teams run up the riverbed with their feet sticking out of the bottom of their boats. Worl9．多少mol H2SO4分子与1.806×1024个水分子含有相同的氧原子数．