An olympiad is a period of four years between two celebrations of the olympic games. An occurrence of the summer or winter olympic games is often commonly called an olympiad. 因为这个是问mr li 现在住哪里，所以时态为一般现在时，因此选c 追问 我填的和你一样，可看了上面两位的答案有点纠结了 追答 the 28th olympic games 作为一个整体是单数 我觉得was.
Native Peoples of the Olympic Peninsula Who We Are
