How could Dennis distinguish between a book and a pillow of the same size and at an equal distance in front of him A book would produce ______.
A: a higher-pitched sound
B: a louder sound
C: a sharper sound
D: a fuzzier sound
A: a higher-pitched sound
B: a louder sound
C: a sharper sound
D: a fuzzier sound
举一反三
- (Multiple Choice) When the volume changes, the amount of sound change is equal in both the approaching sound and the receding sound, which one is more noticeable?（ ） A: the receding sound B: the approaching sound C: both of them
- In American English, “r”sound is rhotic both in front of a vowel sound and a consonant sound.
- The book the author was reading was ______. A: an ordinary book about science B: a science book on sound C: a science story-book about strange creatures on a certain heavenly body D: a book on how to play tricks on others
- In the historical development of language, sound change is inevitable, such as sound loss, sound a______ and sound movement.
- That ____ quite interesting. A: aren't sound B: don't sound C: isn't sound D: doesn't sound