单选题Which of the following is a TRUE statement?A Sound travels fastest through the hardest thing.B Sound travels at different speeds in different temperatures and in different media.C Sound travels fastest in hottest temperature.D Sound travels fastest in
题目
单选题
Which of the following is a TRUE statement?
A
Sound travels fastest through the hardest thing.
B
Sound travels at different speeds in different temperatures and in different media.
C
Sound travels fastest in hottest temperature.
D
Sound travels fastest in coldest temperature.