第二部分：英语知识运用(共两节,满分45分)
第一节 单项填空(共15小题;每小题1分,满分15分)
从A、B、C和D四个选项中,选出可以填入空白出的最佳选项。
21. Panama,____ country in Central America, is the only place in the world ____ someone can see the sun rise on the Pacific Ocean and set on the Atlantic.
A. the, in what B. a, where C. /, where D. a, which
22. Although the small room is the large one, it is more beautifully decorated.
A．one- third the size of B．the one- third size of
C．the size of one-third D．one-third of the size
