教材389-391页9.5；9.7；9.13；9.14；9.15；9.16；9.20

A. To show the applicant how to prepare for a job interview.
B. To show the applicant how to do their best at a job interview.
C. To show the applicant how to impress the interviewers at a job interview.
D. To show the applicant how to handle trick questions at a job interview.

A. 1 000 Hz
B. 2 000 Hz
C. 20000Hz
D. 2 MHz
E. 10 kHz