（）文件属于动画媒体文件。 A: abc.avi B: sound.flc C: xyz.swf D: ab.wps

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

一旦FLC基因甲基化,它将永远甲基化。()

FLC蛋白质的作用是()植物开花。

FLC蛋白质的作用是()植物开花

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