What do you know about Britain? Try saying something about it according to the following pictures.

　　1．The_full_name_of_Britain_is_The_United_Kingdom_of_Great_Britain_and_Northern_Ireland,_which_consists_of_four_parts:_England,_Scotland，Wales and Northern Ireland, with its capital London.

　　2．The_national_flag_of_the_UK_is_called_the_Union_Jack.

　　3．Buckingham_Palace，Tower_Bridge,_Big_Ben,_St.Paul_Cathedral，The Tower of London and so_on_are_all_famous_sightseeing_sites_in_London.

　　4．River_Thames_is_the_most_important_river_and_Oxford_University_and_Cambridge_University are the_most_two_famous_universities_of_this_country.

　　Ⅰ.Fast­reading

　　Choose the best answers according to the text.

　　1．The letter to Aunt Mei was written________.

　　A．before Aunt Mei's visit to London

　　B．during Aunt Mei's visit to London

　　C．after Aunt Mei's visit to London

D．until Aunt Mei's visit to London