单项选择题
A. offering a job B. replying to a letter C. writing a memo D. making a telephone call E. taking some minutes F. producing a report G. setting up a database H. checking some figures
A．although B．if C．even if D．however
A. it can be readily accepted by the audience. B. it can be "forced" on the audience. C. it can be used to accomplish any communication objective.