判斷題

Consonants vary depending on where and how the air stream gets through, the place and movement of the tongue, and also whether the voice is used or not.（）

答案：正確

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Vowels are formed mainly by the position of the tongue and, secondarily, by the shape of the lips and movement of the jaw.（）

答案：正確

The vowel is produced without (or with little) restriction during its production and is always voiced.（）

答案：正確