A．Represent their levels of ability in English．
B．Listen to a recording of a paragraph in English．
C．Circle the words they heard in the paragraph．
D．Take a language proficiency test of the paragraph．
A．The sound of words．
B．The meaning of words．
C．The spelling of words．
D．The usage of words．
A．It has something to do with effectiveness．
B．It is especially popular with businessmen．
C．It is a kind of problem for most people．
D．It will change a person's lifestyle．