You may meet Americans who know very little about your country. If this （1） the case, be patient with them.Unfortunately, little is taught about the cultures or customs of other countries in America schools. The United States has always been separated from older countries by the vast oceans to the East and West of the country. As a（2）Americans have not become so familiar with different cultures and other ways of doing things as is often the case in older countries. If Americans try to help you （3） something that is very familiar to you, if they mistake your country for another of thousands of kilometers away, be patient with them. The United States has developed into a modern nation in a very short time （4） with many other countries – only about 300 years. Americans have been very busy with growth of the country, with building roads and cities, establishing free education for millions of children, and making inventions, discoveries, and developments to benefit the whole world. The Nation's attention has been on the United States, not on the world, during most of this （5） period. It is only since World War Two (1939-1945) that Americans have been more interested in other parts of the World.
4、_____

A.with

B.compared

C.result

D.d303-year

E.eis