English courses, textbooks and English used in official occasions tend to be British English. English content in primary school textbooks is mostly biased towards British English, while English textbooks in senior high schools may contain British and American English elements. The listening part of CET-4, TEM4 and TEM8 is also a mixture of British and American English. With the influence of American culture and the increase of international communication, American English has been paid more and more attention in practical application. After all, English originated in Britain, which is comprehensive in all aspects and accurate in dictionaries. BritishEnglish (BE, UK-E) is also called British English, which is called British sound for short. It is a form of English used in the United Kingdom of Great Britain and Northern Ireland and the most important language in Britain.