单词拼写：（共10小题，每小题0.5分，满分5分） 66. Between Italy and France, there is a mountain r________ called the Alps. 67. Considering size and population, how big is the European Union c__________ with China? 68. A tornado is a r__________ column of air from a thunderstorm to the ground. 69. What c________ the terrible fire? It was a burning cigarette end. 70. Oxford and Grenoble are both m_________-sized towns of between 100,000 and 200,000 inhabitants. 71. The countries are independent and are ___________(统治)in different ways. 72. Paris is the capital and largest city of France, __________ (位于)on the River Seine. 73. The human development index has some _______________.(令人意外的事情) 74. In nine years, China increased life __________(寿命)by 13 years. 75. There was the ____________(可能；可能性) of a huge tidal wave which could flood half the island.