1. What was most remarkable about the Greeks’ system of smoke signals? A. It could communicate words. B. It could be used instantly. C. It could distract the enemy. D. It could be sent to any place. 2. The word ‘transmitted’ in paragraph 3 is closest in meaning to ____________. A. written B. sent C. read . D. understood 3. The word ‘it’ in paragraph 3 refers to _______________. A. instrument B. stick C. message D. village 4. What is the advantage of communicating by drum? A. The length of the message. B. The simplicity of the instrument. C. The speed of the transmission. D. The volume of the sound. 5. Which of the statements about the alphorn is NOT true? A. An alphorn is four metres in length. B. Alphorns could be found in Europe. C. Farmers used them just for communication. D. The art of playing the alphorn is still alive today. 6. How do the people of La Gomera make the sounds of Silbo? A. With an instrument. B. With their mouths and their hands. C. With their mouths only. D. With their tongues only.