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A ______ refers to a particular kind of bird, which is not necessarily black.
Stress, tone and intonation are called ______ features.
A phonological feature of the English ______ is that the stress of the word always falls on the first element, and the second element receives secondary stress.
If you put a finger in each ear and say "z-z-z-z-z", you can feel the vibrations of the ______.
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