1. Find the suitable ending

177. Answer the question. What is “To click”?
press and release the left button
press and release the left button twice
hold down the button, move the pointer to a new place and then release the button
press and release the right button; this action displays a list of commands


178. Answer the question. What is “To double-click”?
press and release the left button twice
press and release the left button
hold down the button, move the pointer to a new place and then release the button
press and release the right button; this action displays a list of commands


179. Answer the question. What is “To drag”?
hold down the button, move the pointer to a new place and then release the button
press and release the left button twice
press and release the left button
press and release the right button; this action displays a list of commands


180. Answer the question. What is “Right click”?
press and release the right button; this action displays a list of commands
hold down the button, move the pointer to a new place and then release the button
press and release the left button twice
press and release the left button


181. Answer the question. What is voice-recognition system?
It can be used to control your PC with voice commands.
It is a hand-held device.
It is USB mini port and cable for wired play and automatic battery charging.
It uses thumbs to handle directional sticks and face buttons.


182. Fill in the gap. A _______ is a stationary device that works like a mouse turned upside down. You roll the ball with your hand to move the pointer on the screen.
trackball
touchpad
webcam
touch screen


183. Fill in the gap. Interactive ________ are used in museums, information centres and Internet kiosks. You use your finger to point directly to objects on the screen.
touch screen
trackball
touchpad
webcam