In the last paragraph,the author mentions a 21-gun...

Câu hỏi: In the last paragraph,the author mentions a 21-gun salute as an example of ………….

A. a type of noise pollution that can cause physical damage and fright.

B. a particularly irritating form of noise pollution.

C. a loud noise that most people tolerate on special occasion.

D. a noise that is much more annoying than soft music.