He had never experienced such discourtesy towards the president as it occurred at the annual meeting in May.

He had never experienced such discourtesy towards the president as it occurred at the annual meeting in May.
A. politeness
B. rudeness
C. encouragement
D. measurement

Đáp án B

=> KEY B: discourtesy: (a) không lịch sự = rudeness: (a) thô lỗ
A. lễ phép, C. khuyến khích, D. đo lường