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  3. When the vocal cords are apart, the air can pass through easily and the sound produced is said to be______.

When the vocal cords are apart, the air can pass through easily and the sound produced is said to be______.

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问题 When the vocal cords are apart, the air can pass through easily and the sound produced is said to be______.
选项 A、voiced
B、voiceless
C、vowels
D、consonants
答案B
解析 当声带合住，气流在强行穿过的时候会使他们以不同的速度振动，这时便会产生浊化(voiced)，如／r，d／。而当声带完全张开，气流通过声带而不引起振动，这时发出的音就是清音(voiceless)，如／p，t，k／。
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