What is the difference between consonants and vowels? A: Vowels have a longer duration in actual production. B: Air stream is obstructed in producing consonants. C: Consonants all involve the vibration of the vocal cords.. D: Vowels are louder than consonants.

A _____ typically contains a consonant or set of consonants followed by a vowel followed by another consonant or set of consonants. （中山大学）

Lip-rounding is used to descsribe consonants.

Another difference in the pronunciation of consonants is that when /t/ is between the ________ in stressed and unstressed syllables, it is read as /d/in ________. A: consonants, RP B: consonants, GA C: vowels, RP D: vowels, GA

Vibration of the vocal is the criterion that distinguishes vowels from consonants.

Lip-rounding is used to descsribe consonants. A: 正确 B: 错误

means syllables which have identical initail consonants.

/p/, /f/, /s/, /t/, /t∫/,/∫/, /θ/, /r/, /h/, /ts/, and /tr/ are ______. A: voiced consonants B: unvoiced consonants

How many consonants are there in English?

What are the features of vowels and consonants?