linguists give priority to the spoken language not the written language because ______. A: vocal sounds are derived from writing systems B: speech precedes writing everywhere in the world C: we have recording devices to study speech D: spoken language precedes written language only in Indo - European languages

Under the four conditions for language learning, _________ refers to letting oneself to be involved in an appropriate language environment , that is , to be exposed to a rich but comprehensible input of real spoken and written language in use.

（ ） refers to body distance and body touch。 A: Body language B: Time language C: Paralanguage D: Space language

Body language sometimes ____________( contradict) the messages of spoken language.

[音频]In addition to spoken language, all human beings also use body language to help them _________________ their ideas. The use of body language, which includes both ___________ with your hands and ___________________,such as a smile, is ____________.