This passage was written mainly to______.

A．over one-tenth of American population have difficulty in using and writing skills in everyday situations
B．in North America nation-wide tests are given to test pupils' functional literacy
C．Canadians are generally at a higher level of functional literacy than Americans are
D．teaching of English reading and writing has turned out to be a failure in Canada and the U. S.

A．It was fine example of music for simple singalong songs.
B．Its appeal was not limited to any particular time or group of people.
C．It was simple in form but rich in meaning.
D．It reached a height which other pop music groups had never reached for their lyrics and melodies.