摘要：A People usually communicate by speaking or writing. However, some occupations rely on hand gestures to communicate. Railway workers on the 45 must communicate with other employees such as engineers on the trains. 46 this, they use lanterns or flags. To 47 `go’, a railway worker stretches out his arm with the lantern 48 his head and moves the lantern up and down. Soldiers in battle often cannot hear each other. It has been 49 that soldiers use a complex 50 of gestures to communicate with each other. When a leader wants other soldiers to follow him, he points to them, and them he uses his arm to point 51 the direction they should go. Soldiers in different countries use similar signals so that they can understand each other even if they are not from the same group. In classical concerts, musicians such as pianists and violinists 52 the directions of the conductor. He or she will direct the other musicians during the song through hand movements and by 53 a small stick known as a baton. Therefore, hand gestures also 54 an important role in the orchestra. 45A. station B. way C. earth D. ground 46.A.To do B. Doing C. For doing D. Do 47.A. signal B. mean C. point D. note 48.A. on B. above C. along D. to 49.A. suggested B. repeated C. reused D. remarked 50.A. way B. device C. system D. organization 51.A. to B. in C. into D. from 52.A. do B. follow C. operate D. flow 53.A. moving B. showing C. removing D. waving 54.A. do B. work C. play D. make

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