背景知识测试

摘要

<正> (一)1. Uncle Sam is the nickname for__. A. England B. the United States C. George Washington D. Abraham Lincoln2. Of all the cities in the U.S.A.__is the largest. A. New York B. Chicago C. Boston D. Los Angeles3.__is the largest in area of all the 50 states in the U. S. A. A. Alaska B. Texas C. California D. Kentucky