A. PAST B. PASSING C. WELL D. THROUGHEVER SINCE HUMANS HAVE INHABI...

65. A. past B. passing C. well D. throughEver since humans have inhabited the earth, they have made (41) _______ of various forms ofcommunication. Generally, this expression of thoughts and feelings has been in the form of oral(42)______. When there is a language (43)______, communication is accomplished through signlanguage in which motions (44) ______ for letters, words, and ideas. Tourists, the deaf, and the mutehave had to (45) ______ to this form of expression. Many of these symbols of whole words are verypicturesque and exact and can be used internationally; spelling, however, cannot.Body language (46) ______ ideas or thoughts by certain actions, either intentionally orunintentionally. A wink can be a way of flirting or indicating that the party is only joking. A nod (47)______ approval, while shaking the head (48) ______ a negative reaction.Other form of nonlinguistic language can be (49) ______ in Braille (a system of raised dots read withthe fingertips), signal flags, Morse code, and smoke signals. Road maps and picture signs also guide,warn, and instruct people.(50) ______ verbalization is the most common form of language, other systems and techniques alsoexpress human thoughts and feelings.