【单选题】

Questions 27—30 are based on the passage about sign language. You now have 20 seconds to read Questions 27—30. What would a NativeAmerican do when he wanted to show that he saw many animalsA．He would run away to hide.

B．He would send signals with a mirror.
C．He would set a fire.
D．He would ride a small horse in a large circle.