–Do you know the man visited the United States in February?Yes. He is Chinese Vice-Pr

问题补充：

–Do you know the man visited the United States in February?

--Yes. He is Chinese Vice-President Xi Jinping. He said it was his visit to the United States.

A. who; fifth

B. that; five

C. /; five

D. which; fifth

答案：

(答案→)A. who; fifth

B. that; five

C. /; five

D. which; fifth

解析：句意：你认识在二月份去参观美国的那个人吗？是的。他是中国的主席，习近平。他说那是他第五次去美国访问。定语从句用来充当句中定语的成分，被修饰的名词叫先行词，连接主从句的是关系词。关系词分：1关系代词：who , whom , whose , which , that。2 关系副词：where,when why 等。一般的who 用于指代人的先行词，which 用来指代物的先行词，that既可指认又可指物。第五次访问，用序数词。故选A。