填空题 In many societies of the world， we find a large number of people who speak more than one language. As a characteristic of societies， b（） inevitably results from the coming into contact of people with different cultures and different languages.

填空题 Phonological rules may move phonemes from one place in the string to another. For example， Modern English verb ask was Old English askian， with the /k/preceding the/s/.Sound change as a result of sound movement is known as m（）.

填空题 While the meaning of a sentence is abstract and decontextualized， that of an u（） is concrete and context-dependent.