Body language 18 ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of indicating that the party is only joking. A nod signifies approval, while shaking the head indicates a 19 reaction.外语学习网
Other forms of nonlinguistic language can be found in Braille (a system of raised dots read with the fingertips) , signal flags, Morse code, and smoke signals. Road maps and 20 signs also guide, warn, and instruct people.
While language is the most common form of communication, other systems and techniques also express human thoughts and feelings.
A. picture B. oral C. stand D. world
E. internationally F. optional G. resort H. vivid
I. earth J. accomplished K. transmits L. represent
M. negative N. intelligently O. translates
II. I 12. B 13. J 14. C 15. G 16. H 17. E 18. K 19. M 20. A