Who is the speaker？A．An artist.B．A student.C．A professor.D．A poet.

According to the speaker, what is an advantage of the change？A．Improve the quality of work

Who is the speaker addressing？A．Customer service agentsB．Floor managersC．Regular customers

What is the relationship between the two speakers？A．A representative of an insurance compa

Who is the speaker？A．A doctor.B．A nurse.C．A professor.D．A student.

Which of the following sentences is INCORRECT？A．He is no more a scientist than an artist.B

______is the knowledge of the rules of an ideal speakers language.A．PerformanceB．CapacityC