单项选择题


·You will hear a radio interview with Martha Flowers, the Managing Director of the MAX chain of sandwich bars.
·Choose the correct phrase to complete each sentence or answer the question.
·Mark one letter(A, B, or C) for the phrase you choose.
·After you have listened once, replay the recording.
According to Martha, what is the most important factor in MAX’s success

A. The same customers keep buying their products.
B. They only sell the best quality products.
C. They earn high profit.