文档介绍：USADo You Know?Focus InUSADo You Know?Based on the following video, what impression do you have about the United States?USADo You Know?II■USA?Have a general idea of the geographical features of the USA?Be familiar with the climatic patterns of the USA?Have a general idea of the four regions of the USA?Have an understanding of the landforms in the four regions ?Learn about the major cities in the four regions Focus InUSAWhere is the United States located?What are the geographical regions in the United States?What are the types of climate in the United States?What do you need to know about the United States?What are the geographical features of the United States?How many political divisions are there in the United States?USA1. National flag of the United States The national flag of the United States of America (the “American flag”) consists of 13 equal horizontal stripes of red (top and bottom) alternating with white, with a blue rectangle in the canton (referred to specifically as the “union”) bearing 50 small, white, five-pointed stars arranged in nine offset horizontal rows of six stars (top and bottom) alternating with rows of five stars. The 50 stars on the flag represent the 50 states and the 13 stripes represent the original 13 colonies that rebelled against the British monarchy and became the first states in the Union. Nicknames for the flag include the “Stars and Stripes”, “Old Glory”, and “The Star-Spangled Banner”.USANational flag of the United States1. National flag of the United StatesUSA The Great Seal of the United States is used to authenticate certain documents issued by the United States federal government. The Great Seal was first used publicly in 1782. The obverse of the Great Seal is used as the national coat of arms of the United States. It is officially used on documents such as United States passports, military insignia, embassy placards, and