中国大学MOOC: The sound [i:] is a high front tense _______ vowel.

Bats (are able) to (guide them) by producing sound waves (too high) for us (to hear). A: are able B: guide them C: too high D: to hear

The sounds that make people feel pleasant are ( ) A: High intensity sound B: Low-pitched voice C: Sounds in the human auditory comfort zone D: All voices

In the historical development of language, sound change is inevitable, such as sound loss, sound a______ and sound movement.

A sound mind is inseparable from a sound body. The word “sound” means______.

That ____ quite interesting. A: aren't sound B: don't sound C: isn't sound D: doesn't sound

8.Primary _________means the direct imitation of sound by sound, of natural sound by human speech sound.

Simultaneous or overlapping articulations, as when the nasal quality of a nasal sound affects the preceding or following sound so that the latter becomes nasalized. If the affected sound becomes more like the following sound, it is known as anticipatory ; if the sound shows the influence of the preceding sound, it is perseverative .​​​​

(Multiple Choice) When the volume changes, the amount of sound change is equal in both the approaching sound and the receding sound, which one is more noticeable?（ ） A: the receding sound B: the approaching sound C: both of them

______ is a process by which one sound takes on some or all the characteristics of a neighboring sound, a term often used synonymously with coarticulation. If a following sound is influencing a preceding sound, it is called regressive assimilation; the converse process, in which a preceding sound is influencing a following sound, is known as progressive assimilation.