Ever since humans inhabited the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is accomplished through sign language in which motions stand for letters, words, and ideas. Tourists, the deaf, and the mute have had to resort to this form of expression. Many of these symbols of whole words are very picturesque and exact and can be used internationally; spelling, however, cannot.

        Body language transmits ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of flirting or indicating that the party is only joking. A nod signifies approval, while shaking the head indicates a negative reaction.

         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 picture signs also guide, warn, and instruct people.

         While verbalization is the most common form of language, other systems and techniques also express human thoughts and feelings.

Question 29: The word "they" in paragraph 1 refers to

A. forms

B. thoughts

C. humans

D. ideas

Question 30: All of the following statements are true EXCEPT 

A. the deaf and mute use an oral form of communication

B. ideas and thoughts can be transmitted by body language

C. there are many forms of communication in existence today

D. verbalization is the most common form of communication

Question 31: Which form rather than oral speech would be most commonly used among blind people?

A. Picture signs

B. Signal flags

С. Вody language

D. Braille

Question 32: People need to communicate in order to

A. be picturesque and exact feelings   

B. express thoughts and feelings

C. create language barriers

D. keep from reading with their fingertips

 Chúc bn hok tốt ^^