A．A lawyer and her client.
B．A professor and a student.
C．A boss and her employee.
D．An editor and an author.

A．Wal-Mart would cause fierce competition with local stores.
B．As the world's biggest retailer, Wal-Mart attracts the Mexican customers with superb service.
C．Stores are forbidden to open around the Pyramid of the Sun.
D．The opening of Wal-Mart muses controversy in Mexico.