【单选题】

The United States (56) a large part of the NorthAmerican continent. Its neighbors areCanada (57) the north, (58) Mexico to the south. (59) the United States is a big country, it’ s not the largest in the worlD、In 1964 its (60) was over 185,000,000.

When this land first became a nation, after (61) independence fromEngland, it had thirteen states, (62) of the states was represented on theAmerican flag by a (63) .All the states were in the eastern part of the continent.As the nation grew towards the west, new states were in the eastern part of the continent.As the nation grew towards the west, new states were added and new stars (64) on the flag. For a long time, there were 48 states. In 1959, however, two (65) stars were added to the flag (66) the new states (67) Alaska and Hawaii.
Sometimes (68) is said that the Indians are the only realAmericans. MostAmericans, however, are descendants(后代) of peoplev (69) came from all over the world to find a new (70) in a new lanD、 (71) who came first and (72) greatest numbers to make their home (73) the eastern coast of NorthAmerica were mostly fromEnglanD、It is (74) that reason that the language of the United States isEnglish and that its culture and customs are more like (75) ofEngland than of any other country in the worlD、
A．which
B．who
C．those
D．whom