【2012山东济南】33. I'm 13 years old and my sister is 15 years old. So my sister is___ years older than me.
A. one B. two C. three D. four
33. B【解析】考查数词用法。句意为 “我13岁了，我姐姐15岁了，我姐姐比我大2岁。”故选B。
【2012黔西南】18. ________ visitors come to Xingyi during May Day holidays every year.
A. Thousands of B. Two thousands C. Thousand of D. Thousand
【解析】A. 考查数词。当hundred，thousand，million和billion表示具体的数目时，用单数形式；当表示不具体的数目时，用复数形式，且跟介词of连用，故选A答案。
