摘要：40．Nearly a month had gone by they gave up the price for which they had held out. A．until B．while C．before D．so that Section B Directions: Complete the passage by choosing the proper words in the box. A．raised B．however C．while D．styles E．inhabited F．symbols G．accomplished H．unintentionally I．shaking J．forms Ever since humans have 41 the earth, they have made use of various 42 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 43 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 44 of whole words are very vivid and exact and can be used internationally; spelling, 45 ,cannot. Body language communicates ideas or thoughts by certain actions, either intentionally or 46 . A nod signifies approval, while 47 the head indicates a negative reaction. Other forms of nonlinguistic language can be found in Braille(a system of 48 dots read with the fingertips),signal flags, Morse code, and smoke signals. Road maps and picture signs also guide, warn, and instruct people. 49 verbalizationis the most common form of language, other systems and techniques also express human thoughts and feelings.

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