语法与词汇 7.When the vocal cords are apart, the air can pass through easily and the sound produced is said to be______.
【正确答案】 B
【答案解析】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/。